CsPbI3钙钛矿纳米晶体与氨基酸配体的双重钝化，用于高效量子点太阳能电池。,Small

当前位置： X-MOL 学术 › Small › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

CsPbI3钙钛矿纳米晶体与氨基酸配体的双重钝化，用于高效量子点太阳能电池。
Small ( IF 13.0 ) Pub Date : 2020-05-17 , DOI: 10.1002/smll.202001772
Donglin Jia ₁ , Jingxuan Chen ₁ , Mei Yu ₁ , Jianhua Liu ₁ , Erik M J Johansson ₂ , Anders Hagfeldt ₃ , Xiaoliang Zhang ₁

Affiliation

无机CsPbI ₃钙钛矿量子点（PQD）在新一代太阳能电池中的应用受到越来越多的关注，但是PQDs表面的缺陷严重影响了太阳能电池的光伏性能和稳定性。此处，氨基酸用作双重钝化配体来钝化CsPbI ₃的表面缺陷使用简便的单步配体交换策略的PQD。通过结合实验研究和理论计算方法深入研究了PQD表面性能。使用广泛的技术彻底表征了PQD表面具有氨基酸作为双钝化配体的PQD固体膜，这表明甘氨酸配体可以显着改善PQD的缺陷钝化，从而减少PQD固体中的电荷载流子重组。与使用Pb（NO ₃）₂制造的传统PQDSC相比，基于甘氨酸的PQD太阳能电池（PQDSC）的功率转换效率（PCE）提高了16.9％。处理PQD表面，以改善电荷载流子提取。进行理论计算以全面了解具有双钝化配体的PQD表面的热力学可行性和有利的电荷密度分布。

"点击查看英文标题和摘要"

Dual Passivation of CsPbI3 Perovskite Nanocrystals with Amino Acid Ligands for Efficient Quantum Dot Solar Cells.

Inorganic CsPbI₃ perovskite quantum dot (PQD) receives increasing attention for the application in the new generation solar cells, but the defects on the surface of PQDs significantly affect the photovoltaic performance and stability of solar cells. Herein, the amino acids are used as dual‐passivation ligands to passivate the surface defects of CsPbI₃ PQDs using a facile single‐step ligand exchange strategy. The PQD surface properties are investigated in depth by combining experimental studies and theoretical calculation approaches. The PQD solid films with amino acids as dual‐passivation ligands on the PQD surface are thoroughly characterized using extensive techniques, which reveal that the glycine ligand can significantly improve defect passivation of PQDs and therefore diminish charge carrier recombination in the PQD solid. The power conversion efficiency (PCE) of the glycine‐based PQD solar cell (PQDSC) is improved by 16.9% compared with that of the traditional PQDSC fabricated with Pb(NO₃)₂ treating the PQD surface, owning to improved charge carrier extraction. Theoretical calculations are carried out to comprehensively understand the thermodynamic feasibility and favorable charge density distribution on the PQD surface with a dual‐passivation ligand.

更新日期：2020-06-18

点击分享查看原文

点击收藏

阅读更多本刊新发论文本刊介绍/投稿指南