Nanostructure-modified electron transport layer

An electron transport layer, nanostructure technology, applied in circuits, electrical components, electrical solid devices, etc., can solve problems such as light absorption loss

Inactive Publication Date: 2021-03-26
NANKAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method can significantly improve the light scattering efficiency, the additional structure introduced also has certain light absorption characteristics, which will cause parasitic light absorption loss.

Method used

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  • Nanostructure-modified electron transport layer
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  • Nanostructure-modified electron transport layer

Examples

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Effect test

Embodiment 1

[0024] A nanostructure-modified electron transport layer, the structure of which is as follows:

[0025] 1) Add 1ml tin dioxide (SnO 2 ) Nanoparticle stock solution and 3ml deionized water were mixed in a ratio of 1:3, and 600 μl of monodisperse polystyrene (PS) nanosphere latex solution with a particle size of 2.5wt% and a particle size of 700mn was taken, and it was mixed evenly by ultrasonication for 10min , the prepared SnO 2 The aqueous solution is mixed with the PS nanosphere latex solution and stirred evenly.

[0026] 2) Ozone treatment is performed on the ITO transparent electrode to increase the hydrophilicity of the surface and the removal of organic matter, take 100 μl PS nanospheres and SnO 2 The mixed aqueous solution was drip-coated on the surface of the ozone-treated ITO, and the spin-coating process was used to make it evenly distributed. The spin-coating speed of the homogenizer was set at 3000rpm, and the spin-coating time was set at 30s; then the annealing...

Embodiment 2

[0031] A nanostructure-modified electron transport layer, the structure of which is as follows:

[0032]1) Mix 1ml of zinc oxide (ZnO) nanoparticle stock solution and 3ml of deionized water at a ratio of 1:3, and take 600 μl of monodisperse polystyrene (PS) nanosphere latex with a particle size of 1.5wt% and a particle size of 300mn solution, ultrasonic 10min to make it evenly mixed, and the prepared ZnO aqueous solution and PS nanosphere latex solution were mixed and stirred evenly.

[0033] 2) Ozone treatment is performed on the ITO transparent electrode to increase the hydrophilicity of its surface and the removal of organic matter. Take 100 μl of PS nanospheres and ZnO mixed aqueous solution and drop-coat it on the ozone-treated ITO surface, and use a spin-coating process to make it evenly distributed. The spin-coating speed of the homogenizer was set at 1500rpm, and the spin-coating time was set at 50s; then an annealing process was used to achieve a good grain boundary o...

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Abstract

The invention relates to a nanostructure-modified electron transport layer, which is prepared by the following steps: mixing a certain proportion of easily-dissolved monodisperse polystyrene nanosphere latex solution in an oxide electron transport layer nanoparticle stock solution, and preparing an electron transport layer containing a monodisperse polystyrene nanosphere preset structure by adopting a co-spin coating process, and finally, performing immersing in a toluene solution to remove a monodisperse polystyrene nanosphere preset structure to obtain an electron transport layer modified bythe semispherical nanostructure. According to the structure, the nanostructure is directly prepared in the electron transport layer, so that the average transmittance and scattering suede of the electron transport layer can be improved, a better photon utilization rate is obtained, the extraction time of carriers at the interface of the absorption layer and the electron transport layer is shortened, and dual effects of photon scattering and photon-generated carrier collection promotion can be achieved; and the photoelectric property of the device is effectively improved.

Description

【Technical field】 [0001] The invention belongs to the field of semiconductor materials and devices, especially the field of photoelectric conversion devices. 【Background technique】 [0002] Organic-inorganic hybrid perovskite materials have become the focus of extensive research in academia due to their excellent optoelectronic properties such as high carrier mobility, low exciton binding energy, ambipolar charge transport, and high light absorption coefficient. Organic-inorganic hybrid perovskites were introduced into the field of photovoltaics, and such photovoltaic devices were reported as early as 2009 by Miyasaka et al. Over the next few years, the power conversion efficiency (PCE) increased rapidly and currently exceeds 25%. See literature: D.Luo, W.Yang, Z.Wang, et al, Science 2018, 360(6396), 1442-1446; X.Zheng, Y.Deng, B. Chen, et al, Advanced Materials 2018, 30( 52), 1803428; Q. Jiang, Y. Zhao, X. Zhang, et al, Nature Photonics 2019, 13(7), 460-466. [0003] The...

Claims

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Application Information

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IPC IPC(8): H01L51/50H01L51/54
CPCH10K85/00H10K30/865H10K50/165H10K50/16
Inventor 黄茜潘恒石标陈永亮朱昭侯国付丁毅赵颖张晓丹
Owner NANKAI UNIV
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