Enhanced Uniformity and Stability of Pb-Sn Perovskite Solar Cells via Me4NBr Passivation

被引：37

作者：

Du, Xingzhi ^{[1
]}

Qiu, Renzheng ^{[1
]}

Zou, Taoyu ^{[1
]}

Chen, Xuexian ^{[2
]}

Chen, Huanjun ^{[2
]}

Zhou, Hang ^{[1
]}

机构：

[1] Peking Univ, Shenzhen Grad Sch, Sch Elect & Comp Engn, Shenzhen 518055, Peoples R China

[2] Sun Yat Sen Univ, Sch Elect & Informat Technol, State Key Lab Optoelect Mat & Technol, Guangzhou 510006, Guangdong, Peoples R China

来源：

ADVANCED MATERIALS INTERFACES | 2019年 / 6卷 / 14期

关键词：

passivation; Pb-Sn perovskite; solar cells; stability; FORMAMIDINIUM TIN IODIDE; HALIDE PEROVSKITES; HETEROJUNCTION; FABRICATION; LAYER; ACID;

D O I：

10.1002/admi.201900413

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Tin-lead (Sn-Pb) based hybrid perovskite solar cell is investigated as a potential solution to extend the light absorption spectrum range, and to reduce environmental hazard caused by lead in the perovskite materials. Nonetheless, due to the instability of tin, the Sn-Pb based perovskite solar cells suffer from more severe efficiency degradation when compared to the lead-based perovskite solar cells, which restricts its further development. Here, a quaternary ammonium halide compound, Me4NBr, is introduced to passivate the Sn-Pb based perovskite surface. The Me4NBr effectively reduces the surface defects and enhances the open circuit voltage and fill factor of the Sn-Pb based perovskite solar cell. Moreover, the Me4NBr treated Sn-Pb perovskite cells also demonstrate a significant stability enhancement when compared with the untreated Sn-Pb perovskite cells.

引用

页数：7

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