Patents
Literature
Hiro is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
Hiro

38results about How to "Strong data retention" patented technology

Doping modified phase change material and phase change storage unit containing same and preparation method thereof

The invention relates to a doping modified phase change material and a phase change storage unit containing same and preparation thereof. The formula of the doping modified phase change material is (Sb2Se3)100-xYx, wherein, x is the atom percentage of an element and is more than 0 and less than or equal to 20, and Y is a doped element and is any one of Ni, Cr, Bi, As, Ga, In, Ge, Si, Sn, Ag, Al, C, N and O. The doping modified (Sb2Se3)100-xYx storage material not only remains the advantages of the fast phase change speed and the low melting point of Sb2Se3 storage material, but also increases crystallization temperature, thus overcoming the disadvantage of poor data retentivity of the Sb2Se3 storage material. The phase change storage containing the (Sb2Se3)100-xYx storage material has the advantages of high speed, low power consumption and favorable data retentivity and the like.
Owner:SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI

U-shaped trench type semiconductor device and manufacture method thereof

The invention pertains to the technical field of semiconductor memories, and specifically relates to a U-shaped trench type semiconductor device which comprises at least one semiconductor substrate, a source region, a drain region, a floating gate, a control gate, a U-shaped trench region and a gate-control p-n junction diode for connecting the floating gate and the drain region. The U-shaped trench type semiconductor device provided in the invention uses the floating gate to store information, and perform charging and discharging on the floating gate through the gate-control p-n junction diode, so advantages of small unit area, high chip density, low operating voltage during data storage and good data rentation capability can be realized.
Owner:SUZHOU ORIENTAL SEMICONDUCTOR CO LTD

Phase-changing memory unit with similar super lattice structure and preparation method thereof

InactiveCN102810636ACrystallization temperature is easily adjustableRaise the maximum crystallization temperatureElectrical apparatusNanoinformaticsPhase-change memoryCrystallization temperature
The invention provides a phase-changing memory unit with a similar super lattice structure, which comprises a phase-changing material layer. In the phase-changing material layer, the similar super lattice structure is formed by periodic and alternate growth of a single GaSb layer and a single phase-changing material Sb2Te3 layer in a nano-thick single layer. The single GaSb layer is 2-8nm thick, and the single phase-changing material Sb2Te3 is 3-12nm thick. The similar super lattice material has the advantages of adjustable crystallization temperature, low thermal conductivity, good thermal stability and high phase-changing speed. When the similar super lattice material is applied in a phase-changing memory, the phase-changing memory has the advantages of high data retention capability, high erasing and writing speed and low power consumption. A particularly preferred similar super lattice GaSb (4 nm) / Sb2Te3 (6nm) has more advantages than other components in the performance of materials and devices.
Owner:SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI

Phase-change storage material and preparation method thereof as well as storage device provided therewith and preparation method thereof

The invention provides a phase-change storage material and a preparation method of the phase-change storage material as well as a storage device provided with the phase-change storage material and a preparation method of the storage device, wherein the phase-change storage material is a Ga-Sb compound with the stoichiometry of GaxSb100-x, and x is more than 0 and less than 50. Compared with the prior art, the phase-change storage material is simple in structure, strong in processability and free from easy-pollution elements; and the phase-change storage device made from the phase-change storage material has the advantages of being rapid in phase-change speed, low in power consumption, strong in data retention, stable in electrical property and the like.
Owner:SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI

Phase change material, phase change storage unit and preparation method thereof

The invention provides a phase change material, a phase change storage unit and a preparation method thereof, wherein the phase change material comprises a tantalum element, an antimony element and atellurium element, wherein the chemical formula of the phase change material is TaxSbyTez, wherein x, y and z refer to atomic percentages of elements, wherein x is greater than or equal to 1 and lessthan or equal to 25, y is greater than or equal to 0.5, z is less than or equal to 3, and x+y+z is equal to 100. The TaxSbyTez phase change film material disclosed by the invention has the characteristics of being high in phase change speed, outstanding in heat stability, high in data retention capability, long in cycle life, high in rate of finished products and the like, wherein Ta5.7Sb37.7Te56.6 has 10 years of data retention at 165 DEG C, and when being applied to a phase change storage device unit, the operation speed of 6ns and the erase number of one million or above can be achieved; meanwhile, the TaxSbyTez phase change material has very small crystal particles, and the sizes of the crystal particles is still smaller than 30 nm after annealing treatment at 400 DEG C for 30min, which is very important for stability, low power consumption and finished product rate of the device. The preparation method of the phase change memory unit is compatible with a CMOS process and is convenient for accurately controlling the components of the phase change material.
Owner:SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI

Ge-Sb-Se phase-change material, phase-change memory unit, and preparation method for Ge-Sb-Se phase-change material

The invention provides a Ge-Sb-Se phase-change material, a phase-change memory unit, and a preparation method for the Ge-Sb-Se phase-change material. The Ge-Sb-Se phase-change material is a phase-change material which comprises three types of elements: Ge, Sb, and Se. The chemical formula of the Ge-Sb-Se phase-change material is GexSbySez, wherein 20<=x<=50, 30<=y<=70, 5<=z<=25, and x+y+z=100. A memory material with different crystallization temperatures, different resistivity and different crystallization activation energy can be obtained through the adjustment of three types of elements of the Ge-Sb-Se phase-change material. Moreover, the phase-change materials in the system are big in difference before and after a phase change, are stronger in adjustability, and provide specific performance according to the actual needs. Compared with conventional Ge2Sb2Te5, the Ge-Sb-Se phase-change material provided by the invention is better in thermal stability, and is stronger in data holding capability, and is higher in crystallization speed. The preparation method for the Ge-Sb-Se phase-change material is simple in technology, and facilitates the precise control of material components.
Owner:SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI

Si-Te-Sb series phase-change thin film material for phase-change memory

The invention provides a Si-Te-Sb series phase change film material for a phase change memory, which belongs to microelectronics field. At present, Ge2Te5Sb2 material has lower crystallization temperature (about 165 DEG G) and faces to a danger of data loss. The Si-Te-Sb memory material for the phase change memory has a general formula as follows: SiaTebSb100-(a+b), therein, 20<=a<=b, 20<=b<48. The material has higher crystallization temperature, better thermal stability and more stronger data keeping ability, at the same time, has even crystal phase structure and nanometer-sized grain size, and has better reversible phase change ability, at the same time, improves fatigue property.
Owner:BEIJING UNIV OF TECH

Phase change memory material and preparation method thereof

ActiveCN102185106ASmall grainSmall and controllable tiny grainsElectrical apparatusPhase-change memoryHeat stability
The invention provides a phase change memory material and a preparation method thereof. The phase change memory material is the compound of silicon-bismuth-tellurium, the general equation is SiBiyTe100-(x+y), wherein x is more than 10 but less than 90, and y is more than 0 and less than 50. Compared with the prior art, the phase change memory material has the advantages of being simple in structure, small in grains, high in heating efficiency, low in power dissipation, fast in device storage speed, high in crystallization temperature, good in heat stability, strong in data retention and the like.
Owner:SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI

Nanocomposite phase-change material, preparation method and application thereof in phase-change memory

The invention relates to a nanocomposite phase-change material, a preparation method and an application thereof in a phase-change memory, wherein the nanocomposite phase-change material comprises a phase-change material GeTe with a molar percentage of 70-99% and a medium material HfO2 with a molar percentage of 1-30%. The phase-change material GeTe and the medium material HfO2 are uniformly compounded in a nanoscale, so that the crystallization of the phase-change material is suppressed, the thermal stability of the material is enhanced and the data keeping capacity of the material is improved on one hand, and the valid programming volume is reduced due to the participation of the medium material so as to reduce the volume change before and after the crystallization of phase-change unit and decrease the RESET current on the other hand; therefore, the operation stability and the realization of low power consumption of storage apparatus are promoted. In a word, the novel nanocomposite phase-change material is applied to a memory, and is capable of decreasing the RESET voltage of a phase-change storage apparatus and reducing the programming volume, which is beneficial to realizing high-density storage, increasing the heating efficiency of the phase-change memory during programming process, decreasing the power consumption, enhancing data keeping capacity, and the like.
Owner:SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI

PCM (phase-change material), phase change memory made of PCM and production method of phase change memory

The invention provides PCM. The PCM is a compound with component general formula of Cr<x>Sb<y>Te<1>. As atomic ratios of elements, x is larger than 0 and smaller than 1, and y is no smaller than 0 and no larger than 3.5. The invention further provides a phase change memory made of the PCM and a production method of the phase change memory. According to the arrangement, Cr-Sb-Te sulfur-based compound phase change material provided allows reversible transformation between high resistance state and low resistance state under action of external energy; as the Cr-Sb-Te sulfur-based compound phase change material serves as memory medium of the phase-change memory, a phase-change memory unit is high in phase change speed, low in write operation current and the like, and high-temperature data retention and reliability of a device are improved. Aims to memory principle and characteristics of the phase-change memory, a phase-change memory unit structure based on the novel phase change material Cr<x>Sb<y>Te<1> is further provided, allowing the phase-change memory comprising the Cr<x>Sb<y>Te<1> phase change material is high in speed, low in consumption, high in data retention and the like.
Owner:SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI

Ga-Ge-Sb-Te film material used for phase change memory

The invention provides a Ga-Ge-Sb-Te film material used for a phase change memory. The general formula of the Ga-Ge-Sb-Te film material is GaxGeySbzTew, wherein x is more than 0 and less than or equal to 16, y is more than or equal to 23 and less than or equal to 28, z is more than or equal to 26 and less than or equal to 31, and w is more than or equal to 30 and less than or equal to 40. The Ga-Ge-Sb-Te film material provided by the invention has the characteristics of high crystallization temperature, good thermal stability and strong data retentivity and can be applied to high temperature fields such as automotive electronics.
Owner:SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI

Self-heating phase-change storage unit and self-heating phase-change storage structure

The invention provides a self-heating phase-change storage unit and a self-heating phase-change storage structure. The self-heating phase-change memory unit includes a self-heating electrode and a phase-change storage medium connected with the self-heating electrode; the self-heating electrode comprises at least one self-heating material layer; the phase-change storage medium comprises at least one layer phase-change storage material layer; the self-heating material layer and the phase-change storage material layer are made of different materials; and the self-heating material layer and the phase-change storage material layer each comprise at least one chalcogen element. The self-heating phase-change storage unit of the invention has fast data writing capability and a low-power consumptioncharacteristic; and thermal interference between adjacent self-heating phase-change storage units can be effectively avoided. The self-heating phase-change structure of the invention has the advantages of very high data writing speed, strong data retention capability, low power consumption, long service life and the like.
Owner:SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI

RFID (Radio Frequency Identification) chip with built-in double memory

An RFID (Radio Frequency Identification) chip with a built-in double memory relates to an RFID technology. The RFID chip comprises a simulation front-end module, a memory module and a digital processing control module which is connected with the simulation front-end module and the memory module. The RFID chip with the built-in double memory is characterized in that the memory module comprises an EEPROM (Electrically Erasable Programmable Read Only Memory) unit and an XLPM (Ultra Low-power Permanent Memory) unit. The RFID chip with the built-in double memory has the advantages of being convenient to utilize due to the fact that different memories are distinguished through addresses, strong in data retention capability, radiation resistant, tamper-proof and capable of being well embedded in an RFID chip design or other designs in an IP (Internet Protocol) mode.
Owner:CHENGDU KILOWAY ELECTRONICS CO LTD

Erasable rewriting phase change optical disk capable of being subjected to fluorescent read

An erasable rewriting phase change optical disk capable of being subjected to fluorescent read comprises an upper protective layer, a recording layer, a lower protective layer and a disk base, and is characterized in that the recording layer is a fluorescent phase change recording layer; the fluorescent phase change recording layer is formed by mixing an Sb2Te3-GeTe film into BiSb of which the thickness is 10-200 nm or mixing the Sb2Te3-GeTe film into NiO of which the thickness is 10-200 nm. The optical disk reserves the characteristics of quick writing and erasing speed, strong data retentivity and high cycling stability of the conventional phase change optical disk, and meanwhile the signal-to-noise ratio of reading is greatly improved. The reading is not reflective reading, no extra metal reflecting layer is needed, and the structure of the film is simpler as compared with the conventional phase change optical disk.
Owner:SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI

Thin film material for phase change memory and preparation method thereof

ActiveCN102361063BEasy to readIdeal phase change memory materialElectrical apparatusPhase-change memoryCu element
The invention provides a thin film material for a phase change memory and a preparation method thereof. The thin film material is a material composed of three elements, namely copper, stibium and tellurium, and a general formula of the material is CuxSbyTez, in which x is greater than 0 and less than or equal to 40, y is greater than or equal to 15 and less than or equal to 85, and z is greater than or equal to 15 and less than or equal to 85. According to the material provided by the invention, different crystallization temperatures, melting points and crystallization rates can be obtained by adjusting contents of the three elements in the material, so that the element ratio of the copper to the stibium to the tellurium is properly adjusted to obtain a higher crystallization temperature, a better thermal stability, a lower melting point and a higher crystallization rate compared with the traditional Ge2Sb2Te5(GST). Moreover, copper interconnection is a mainstream interconnection technology in the current oversized-scale integrated circuit, and the processing technology of the Cu element becomes more mature through the extensive use of the interconnection technology, and therefore, the Cu-Sb-Te phase change material provided by the invention is easy to process and has good compatibility with a COMS (Complementary Metal Oxide Semiconductor).
Owner:SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI

Flash memory unit and floating gate forming method thereof

Provided are a flash memory unit and a floating gate forming method thereof. The floating gate forming method of the flash memory unit comprises the following steps of providing a substrate on which a floating gate layer doped with first type ions is formed; forming a graphical first photoresist on the floating gate layer doped with the first type ions; etching the graphical first photoresist through a dry method, wherein the figure of the first photoresist after etching through the dry method has a smaller dimension than the figure of the first photoresist before etching through the dry method; and performing a second type ion injection to the floating gate layer doped with the first type ions by using the first photoresist after etching through the dry method as a mask layer to form a floating gate layer with a double doped structure, wherein the first type ions is inversed with the second type ions. According to the floating gate of the flash memory unit and the flash memory unit forming method, the flash memory unit that is small in critical dimension and has the double doped floating gate structure can be produced, and the flash memory unit is high in programming efficiency, high in data maintenance capability and low in cost of processing.
Owner:SEMICON MFG INT (SHANGHAI) CORP

Resistive random access memory

The invention provides a resistive random access memory. The resistive random access memory comprises a first electrode, a second electrode, a variable resistance layer, a first metal layer, a second metal layer and a resistance stabilizing layer, wherein the second electrode is disposed on the first electrode. The variable resistance layer is disposed between the first electrode and the second electrode. The first metal layer is disposed between the variable resistance layer and the second electrode. The second metal layer is disposed between the first metal layer and the second electrode. The resistance stabilizing layer is disposed between the first metal layer and the second metal layer. The oxygen content of the variable resistance layer is higher than that of the first metal layer, the oxygen content of the first metal layer is higher than that of the resistance stabilizing layer, and the oxygen content of the resistance stabilizing layer is higher than that of the second metal layer. The resistive random access memory has good durability, reset characteristics and data retention capability.
Owner:WINBOND ELECTRONICS CORP

Phase transition thin film material, preparation method thereof and phase transition memory unit

The invention provides a phase transition thin film material, a preparation method thereof and a phase transition memory unit. A general formula of the phase transition thin film material is Ni<x>Ti<y>Sb<z>Te<100-x-y-z>, wherein x is greater than 0 and lower than or equivalent to 40, y is greater than or equivalent to 15 and lower than or equivalent to 85, z is greater than or equivalent to 15 and lower than or equivalent to 85, and x+y+z is greater than or equivalent to 30 and lower than or equivalent to 100. The phase transition thin film material can realize reversible phase transition via external electric pulses, the resistance state is changed obviously before and after phase transmistion, a difference between the resistances is high, the state 0 or 1 can be read convenient and easily by an external circuit, and the phase transition thin film material can be an ideal phase transition storage material; and compared with common Ge2Sb2Te5, the phase transition thin film material has a higher crystallization temperature, a higher crystallization speed, a lower operation voltage and a more stable chemical preparation technology.
Owner:SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI

Ta-Ge-Sb-Te phase change material, preparation method thereof and phase change memory unit

The invention provides a Ta-Ge-Sb-Te phase change material, a preparation method thereof and a phase change memory unit. The Ta-Ge-Sb-Te phase change material comprises a tantalum (Ta) element, a germanium (Ge) element, an antimony (Sb) element and a tellurium (Te) element, the chemical formula of the Ta-Ge-Sb-Te phase change material is TaxGeySbzTe<100-x-y-z>, x is greater than or equal to 2 andless than or equal to 15, y is greater than or equal to 5 and less than or equal to 50, and z is greater than or equal to 5 and less than or equal to 70. According to the Ta-Ge-Sb-Te phase change material provided by the invention, storage materials with different crystallization temperatures, resistivity and crystallization activation energy can be obtained by adjusting the contents of the tantalum (Ta) element, the germanium (Ge) element, the antimony (Sb) element and the tellurium (Te) element and the thickness of a thin film. Compared with the traditional Ge2Sb2Te5, the Ta-Ge-Sb-Te phase change material provided by the invention has the advantages of higher thermal stability, stronger data retention force and higher crystallization speed.
Owner:SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI

Optical phase change storage material based on arsenic tellurium compound, device and preparation method thereof

PendingCN114400285AImprove performanceGood Optical Reflectance/Transmittance ContrastElectrical apparatusPhase-change memoryTellurium compounds
The invention discloses an optical phase change storage material based on an arsenic-tellurium compound, a device and a preparation method thereof, the optical phase change storage material comprises an arsenic (As) element and a tellurium (Te) element, the chemical formula of the phase change material is AsxTey, xlt; 3, 2lt; yt; Yt; 4. The phase change material is high in crystallization temperature and good in amorphous stability, meanwhile, the reflectivity / transmittance difference of the crystal phase and the amorphous phase of the material within the visible light range is large, binary logic recognition of 0 and 1 is expected to be broken through, and stable recognition of multiple optical reflectivity / transmittance states is achieved in the same device unit. The optical phase change memory provided by the invention comprises a substrate layer, an optical waveguide material layer and a phase change material layer which are sequentially stacked from bottom to top, and the phase change material used by the phase change material layer is the arsenic tellurium compound phase change material. An optical phase change memory device with strong data retention and stable performance can be prepared based on the arsenic tellurium compound optical phase change memory material, and a multi-valued optical phase change memory or a brain-like computing device is expected to be prepared.
Owner:XI AN JIAOTONG UNIV

Phase transition storage material and preparation method thereof

The invention relates to a phase transition material and a preparation method thereof, wherein the phase transition storage material is a gallium-antimony-selenium compound. The chemical component is Ga x SbySez, wherein 4 (*(40, 25 (y (85, 5 (z (70, x + y + z = 100. The gallium-antimony-selenium phase transition thin film material provided in the invention, compared to a common Ge2Sb2Te5 (GST) material, has a better heat stability, a faster phase transition speed and a lower melting point. Meanwhile, the gallium-antimony-selenium phase transition thin film material provided in the invention does not contain element Te, is friendly to environment, does not contaminate semiconductor equipment and brings conveniences for subsequent technology processing. The phase transition memory manufactured of the phase transition storage material possesses advantages such as strong data confining force, low power dissipation, fast operation speed, stable electrics performance and the like.
Owner:SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI

Cr-Sb phase change storage material and preparation and application thereof

The invention belongs to the technical field of microelectronics, and discloses a Cr-Sb phase change storage material and preparation and application thereof. The general formula of the chemical composition of the Cr-Sb phase change storage material is CriSbj, i and j respectively correspond to atomic percentages of Cr atoms and Sb atoms in the Cr-Sb phase change storage material, i is greater than or equal to 5 but less than or equal to 30, j is greater than or equal to 70 but less than or equal to 95, and i + j is equal to 100. Cr is doped into single crystal Sb, the Cr-Sb phase change storage material with the chemical composition general formula of CriSbj is obtained, the chemical combination of Cr and Sb brings a series of material property changes, and thus, the binary Cr-Sb phase change storage material with thermal stability and abnormal optical properties is realized, the amorphous stability can be improved, the crystallization temperature of the phase change material is increased, the thermal stability of the phase change storage material is thus improved, and the Cr-Sb phase change storage material is particularly suitable for being applied to a phase change memory, an artificial neural network or an inhibitory synaptic device.
Owner:HUAZHONG UNIV OF SCI & TECH

Nanocomposite phase-change material, preparation method and application thereof in phase-change memory

The invention relates to a nanocomposite phase-change material, a preparation method and an application thereof in a phase-change memory, wherein the nanocomposite phase-change material comprises a phase-change material GeTe with a molar percentage of 70-99% and a medium material HfO2 with a molar percentage of 1-30%. The phase-change material GeTe and the medium material HfO2 are uniformly compounded in a nanoscale, so that the crystallization of the phase-change material is suppressed, the thermal stability of the material is enhanced and the data keeping capacity of the material is improved on one hand, and the valid programming volume is reduced due to the participation of the medium material so as to reduce the volume change before and after the crystallization of phase-change unit and decrease the RESET current on the other hand; therefore, the operation stability and the realization of low power consumption of storage apparatus are promoted. In a word, the novel nanocomposite phase-change material is applied to a memory, and is capable of decreasing the RESET voltage of a phase-change storage apparatus and reducing the programming volume, which is beneficial to realizing high-density storage, increasing the heating efficiency of the phase-change memory during programming process, decreasing the power consumption, enhancing data keeping capacity, and the like.
Owner:SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Eureka Blog
Learn More
PatSnap group products