同质结
钙钛矿(结构)
粘附
材料科学
工作职能
功能(生物学)
工作(物理)
工程物理
光电子学
纳米技术
细胞生物学
化学工程
复合材料
工程类
机械工程
生物
兴奋剂
图层(电子)
作者
Chunyang Zhang,Yoosang Son,Hyungjun Kim,Sun‐Ho Lee,Xin Liang,Guiming Fu,Sanguk Lee,Dong-Am Park,Qi Jiang,Kai Zhu,Nam‐Gyu Park
出处
期刊:Joule
[Elsevier]
日期:2024-03-01
被引量:7
标识
DOI:10.1016/j.joule.2024.02.015
摘要
Perovskite solar cells (PSCs) have demonstrated a comparable efficiency to Si-based cells. However, the buried interface with weak adhesion remains a critical issue since the ion migration enhanced by the built-in electric field at this interface might lead to instability. We report here that adjusting the energy-level alignment at the weak adhesion homojunction interface can mitigate ion migration and thereby enhance the stability and photovoltaic performance of PSCs. Functional molecules with self-assembled monolayer characteristics were introduced to the surface of the SnO2 layer using silane derivatives, which tuned the work function of the homojunction depending on the functional groups in the molecules and thereby significantly reduced the built-in electric field. The PSC exhibited a power conversion efficiency (PCE) of 25.3%. The maximum power point (MPP) tracking under continuous illumination confirmed that the device retained more than 97% of its initial PCE, even after 1,000 h.
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