Efficient and Stable Inverted Perovskite Solar Cells Enabled by a Fullerene-Based Hole Transport Molecule

被引：2

作者：

Luo, Jiefeng ^{[1
]}

Zhang, Hui ^{[1
]}

Sun, Chao ^{[1
]}

Hou, Enlong ^{[1
]}

Wang, Xin ^{[1
]}

Guo, Sai ^{[2
,3
]}

Chen, Jingfu ^{[1
]}

Cheng, Shuo ^{[1
]}

Chen, Shanshan ^{[1
]}

Zhao, Xinjing ^{[1
]}

Xie, Liqiang ^{[1
]}

Meng, Lingyi ^{[2
,3
]}

Tian, Chengbo ^{[1
]}

Wei, Zhanhua ^{[1
]}

机构：

[1] Huaqiao Univ, Inst Luminescent Mat & Informat Displays, Coll Mat Sci & Engn, Xiamen Key Lab Optoelect Mat & Adv Mfg, Xiamen 361021, Peoples R China

[2] Chinese Acad Sci, Fujian Inst Researchon Struct Matter, CAS Key Lab Design & Assembly Funct Nanostruct, Fuzhou 350002, Fujian, Peoples R China

[3] Chinese Acad Sci, Fujian Inst Researchon Struct Matter, Fujian Prov Key Lab Nanomat, Fuzhou 350002, Fujian, Peoples R China

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2024年 / 63卷 / 51期

基金：

中国国家自然科学基金;

关键词：

Inverted perovskite solar cells; Fullerene derivative; Hole transport material; Intramolecular electron transfer; Interface modification; LOW-COST; NICKEL-OXIDE; NIO; EXTRACTION; LAYER;

D O I：

10.1002/anie.202411659

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Designing an efficient modification molecule to mitigate non-radiative recombination at the NiOx/perovskite interface and improve perovskite quality represents a challenging yet crucial endeavor for achieving high-performance inverted perovskite solar cells (PSCs). Herein, we synthesized a novel fullerene-based hole transport molecule, designated as FHTM, by integrating C60 with 12 carbazole-based moieties, and applied it as a modification molecule at the NiOx/perovskite interface. The in situ self-doping effect, triggered by electron transfer between carbazole-based moiety and C60 within the FHTM molecule, along with the extended pi conjugated moiety of carbazole groups, significantly enhances FHTM's hole mobility. Coupled with optimized energy level alignment and enhanced interface interactions, the FHTM significantly enhances hole extraction and transport in corresponding devices. Additionally, the introduced FHTM efficiently promotes homogeneous nucleation of perovskite, resulting in high-quality perovskite films. These combined improvements led to the FHTM-based PSCs yielding a champion efficiency of 25.58 % (Certified: 25.04 %), notably surpassing that of the control device (20.91 %). Furthermore, the unencapsulated device maintained 93 % of its initial efficiency after 1000 hours of maximum power point tracking under continuous one-sun illumination. This study highlights the potential of functionalized fullerenes as hole transport materials, opening up new avenues for their application in the field of PSCs. A novel fullerene-based hole transport material (FHTM) has been designed and synthesized, exhibiting high hole mobility through intramolecular electron transfer. Incorporating FHTM at the NiOx/perovskite interface optimizes the energy level alignment and improves the quality of the perovskite layer. This integration results in an inverted perovskite solar cell with a champion efficiency of 25.58 % (certified:25.04 %) and enhanced stability. image

引用

页数：9

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