Record-Efficiency Inverted CsPbI3 Perovskite Solar Cells Enabled by Rearrangement and Hydrophilic Modification of SAMs

被引：5

作者：

Xu, Dongfang ^{[1
]}

Wu, Meizi ^{[1
]}

Bai, Yimin ^{[1
]}

Wang, Baihui ^{[1
]}

Zhou, Hui ^{[1
]}

Fan, Zihao ^{[1
]}

Zhang, Na ^{[1
]}

Tan, Jieke ^{[1
]}

Li, Hongxiang ^{[2
]}

Bian, Hongtao ^{[1
]}

Liu, Zhike ^{[1
]}

机构：

[1] Shaanxi Normal Univ, Sch Mat Sci & Engn, Key Lab Appl Surface & Colloid Chem, Shaanxi Key Lab Adv Energy Devices,Minist Educ,Sha, Xian 710119, Peoples R China

[2] Sichuan Univ, Coll Polymer Sci, Engn State Key Lab Polymer Mat Engn, Chengdu 610065, Peoples R China

来源：

ADVANCED FUNCTIONAL MATERIALS | 2025年 / 35卷 / 02期

基金：

中国国家自然科学基金;

关键词：

CsPbI3; inverted perovskite solar cells; niobium pentachloride; record-efficiency; self-assembled molecules;

D O I：

10.1002/adfm.202412946

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Recently, the inverted CsPbI3 perovskite solar cells (PSCs) have attracted extensive attentions due to their potential to combine with silicon solar cells for tandem devices with theoretical power conversion efficiency (PCE) of 44%. However, the reported self-assembled molecules (SAMs) as hole selected layer for inverted PSCs have poor wettability and serious agglomeration, which greatly limits the efficiency and stability of PSCs. To address above problem, niobium pentachloride (NCL) is applied to prevent SAMs agglomeration for a homogenous SAMs film with a hydrophilic surface. The optimized SAMs surface facilitates the deposition of the cesium lead triiodide (CsPbI3)film with an enhanced referred orientation, suppressed defects, and released stress. Consequently, the NCL-treated CsPbI3 PSCs achieved a champion PCE of 21.24%, which is the highest PCE value for inverted all-inorganic PSCs. The optimized device maintained 97.61% initial PCE after 1000 h storage in air, and 92.27% initial PCE after 1000 h tracking at the maximum power point (MPP).

引用

页数：9