9results about How to "Reduce the starting voltage" patented technology

The invention relates to a boron-containing organic material, belongs to the technical field of organic luminescent materials, and also relates to an application of the compound in an organic electroluminescent device. The compound disclosed by the invention has a structure as shown in a formula (I). The compound disclosed by the invention has the characteristic of narrow spectrum emission, is beneficial to improving the luminous efficiency in a device, can effectively increase the recombination rate of excitons, and is beneficial to improving the efficiency and prolonging the service life of the device. # imgabs0 #

The present invention provides an organic compound and its application. The compound has a structure shown in formula (1). When the compound of the present invention is used in an organic electroluminescent device, especially as a luminescent dye material, the device driving voltage can be effectively reduced, the device luminescence efficiency can be improved, and the best effect can be achieved.

The present invention provides a compound and its application. The compound has a structure shown in formula (1). When the compound of the present invention is used in an organic electroluminescent device, especially as a luminescent dye material, the device excitation voltage can be effectively reduced, the device luminescence efficiency can be improved, and the best effect can be achieved.

The invention relates to a gas concentration measuring device and method. The gas concentration measuring device comprises a gas detection cavity, a temperature sensing assembly, a pressure sensing assembly, a light source supply device and a light sensing device, and is used for measuring the gas concentration of gas (such as ozone) to be measured. The temperature sensing assembly and the pressure sensing assembly respectively measure the temperature and the pressure of the gas to be measured. The light source supply device adopts a UV-LED as an ultraviolet light source and provides a first detection light beam and a correction light beam which have different ozone absorption brightness, and then the first detection light beam and the correction light beam are respectively divided into split light passing through gas to be detected and split light not passing through the gas to be detected by a light splitting assembly. The light sensing device can respectively measure the light intensity containing ozone and the light intensity not containing ozone of the first detection light beam and the correction light beam. By comparing the light intensity, the concentration of the ozone gas can be calculated according to the Beer-Lambert Law (Beer-Lambert Law).

This invention provides a triarylboron-modified fluorescent material, its preparation method, and its applications. The triarylboron-modified fluorescent material is as shown in Compound I. The compound of this invention utilizes the electron-withdrawing ability and high steric hindrance of triarylboron to effectively accelerate the antisystem crossing rate of narrow-band luminescent materials, reducing intermolecular interactions, thereby improving quantum efficiency and suppressing the efficiency roll-off problem of organic electroluminescent devices. Furthermore, due to the typical electron-donating characteristics, strong resonance effect, and rigid molecular structure of this type of molecule, the emission spectrum becomes narrower, thus achieving very high purity green light emission.

The present invention belongs to the field of organic light-emitting materials and semiconductor technology, and relates to a porphyrin copper derivative and an electroluminescent device thereof. The structural formula of the porphyrin copper derivative is:. The middle position of the porphyrin copper derivative is a hydrocarbon group, which reduces the conjugation degree of the porphyrin copper derivative. The emission wavelength of the electroluminescent device prepared based on the porphyrin copper derivative is in the orange light range, which is significantly shorter than the emission wavelength (red light to near infrared light range) of the electroluminescent device prepared by the traditional porphyrin metal derivative. The porphyrin copper derivative of the present invention is used as a sensitizer or guest luminescent material in the light-emitting layer of the electroluminescent device, and the successful preparation of an electroluminescent device with a shorter emission wavelength can be achieved.

The invention discloses an organic metal compound as well as a preparation method and application thereof, and relates to the technical field of organic electroluminescence. Functional groups such as benzene and biphenyl are introduced to a dibenzofuran ring main body, and electron withdrawing groups such as cyano or methyl are added to a benzene ring, so that compared with a contrast compound, the compound provided by the invention has the advantages that the molecular configuration is changed, a conjugated system is enlarged, and the electrochemical characteristics of the compound are adjusted; after the obtained organic compound is applied to the organic electroluminescent device, the starting voltage of the device is reduced, the luminous efficiency of the device is improved, and the service life of the device is prolonged.

This invention discloses an organometallic iridium complex, a luminescent material, and an organic electroluminescent device, relating to the field of organic electroluminescence technology. The structural formula of the organometallic iridium complex is shown in Formula I: ; wherein, R9, R... 10 R 11 and R 12 At least one of them is adamantane; R 13 R 14 and R 15 At least one of them is fluorine or cyano. This invention introduces electron-withdrawing groups, such as cyano or fluorine, onto the dibenzofuran ring host, thereby altering the molecular configuration of the compound, increasing the conjugated system, and regulating the electrochemical properties of the compound. This results in an organic compound that, when used in organic electroluminescent devices, lowers the device's startup voltage and improves its luminous efficiency and lifetime. Simultaneously, this invention adds adamantane at the pyridine position. The hydrophobicity of adamantane reduces the absorption of moisture by the OLED material, decreasing the corrosion of the device by water and oxygen, thus improving the material's lifetime.

The invention discloses a multi-mode working photoelectric energy collection interface circuit and a control method thereof, and the circuit comprises a cold start module which is used for generating a pulse signal; the auxiliary boosting module is electrically connected with the cold start module, responds to the pulse signal to generate an output voltage, charges and discharges through an inductor in the auxiliary boosting module to enable the output voltage to be larger than a first threshold value, a first control signal is generated, and the first control signal is used for increasing the photoelectric energy collection speed; the first control signal is also used for controlling the cold start module to close; and the main boosting module is electrically connected with the auxiliary boosting module, generates a second control signal when the output voltage is greater than a second threshold value, and makes the output voltage rise stably in response to the second control signal. According to the invention, rapid and efficient photoelectric energy collection can be realized under a relatively small power supply voltage.