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P-N junction

P-N junction

A p-n junction is formed when p-type and n-type semiconductor materials are joined together. At the interface of the p-n junction, holes from the p-side and electrons from the n-side begin to diffuse into the opposite sides due to the concentration gradient. This diffusion of carriers leads to a region around the junction where there are no free charge carriers, known as the depletion region. The charge density within the depletion region for the n-side and p-side can be described by the...

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Updated: Aug 13, 2025

Monovalent Cation Doping of CH3NH3PbI3 for Efficient Perovskite Solar Cells

Monovalent Cation Doping of CH3NH3PbI3 for Efficient Perovskite Solar Cells

Published on: March 19, 2017

用于稳定,高效的矿太阳能模块的基质聚合物 p-doping 和粒度调节

Shuai You^1,2, Haipeng Zeng¹, Yuhang Liu²

¹Michael Grätzel Center for Mesoscopic Solar Cells, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, Hubei, China.

Science (New York, N.Y.)

|January 19, 2023

概括

研究人员为矿太阳能电池 (PSC) 开发了新材料, 提高了它们的稳定性和效率. 这些进步带来了持久的PSC,在具有挑战性的条件下保持高性能,为可靠的太阳能铺平了道路.

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Published on: February 27, 2017

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Last Updated: Aug 13, 2025

Monovalent Cation Doping of CH3NH3PbI3 for Efficient Perovskite Solar Cells

Monovalent Cation Doping of CH3NH3PbI3 for Efficient Perovskite Solar Cells

Published on: March 19, 2017

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Published on: February 3, 2021

Influence of Hybrid Perovskite Fabrication Methods on Film Formation, Electronic Structure, and Solar Cell Performance

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Published on: February 27, 2017

科学领域:

材料科学
太阳能发电
固态化学

背景情况:

高性能矿太阳能电池 (PSC) 需要高质量的矿吸光器和稳定的有机孔提取层.
现有的PSC面临着在运行压力下稳定的挑战,包括照明,热量和湿度.

研究的目的:

提高混合矿太阳能电池的性能和运行稳定性.
在PSC中引入新的谷物边界调节和孔输送层.

主要方法:

将酸功能化的富勒烯衍生物作为混合阴离子矿中的粒度边界调节剂.
开发和应用一个氧化还原活性基聚合物,聚氨酸盐,作为一个穿孔传输材料和离子扩散屏障.
矿太阳能电池和微模块的制造和特征.

主要成果:

在1平方厘米的混合离子PSC中实现了23.5%的功率转换效率 (PCE).
在17.1平方厘米的最小模块中显示PCE为21.4%.
开发的PSC在70°C持续照明3265小时后保持了95.5%的初始效率.

结论:

酸功能化的富勒烯衍生物有效地巩固了矿晶体结构,增强了薄膜耐受性.
聚氨酸盐促进p-doping,减轻离子扩散,提高设备的稳定性.
该研究提出了一个可行的策略,用于创造高效和耐用的矿太阳能电池.