Toward Scalable PbS Quantum Dot Solar Cells Using a Tailored Polymeric Hole Conductor

被引：85

作者：

Xue, Ye ^{[1
]}

Yang, Fan ^{[1
]}

Yuan, Jianyu ^{[1
]}

Zhang, Yannan ^{[1
]}

Gu, Mengfan ^{[1
]}

Xu, Yalong ^{[1
]}

Ling, Xufeng ^{[1
]}

Wang, Yao ^{[1
]}

Li, Fangchao ^{[1
]}

Zhai, Tianshu ^{[1
]}

Li, Junnan ^{[1
]}

Cui, Chaohua ^{[2
]}

Chen, Yiwang ^{[3
]}

Ma, Wanli ^{[1
]}

机构：

[1] Soochow Univ, Inst Funct Nano & Soft Mat FUNSOM, Jiangsu Key Lab Carbon Based Funct Mat & Devices, Joint Int Res Lab Carbon Based Funct Mat & Device, 199 Ren Ai Rd,Suzhou Ind Pk, Suzhou 215123, Jiangsu, Peoples R China

[2] Soochow Univ, Coll Chem Chem Engn & Mat Sci, Lab Adv Optoelect Mat, Suzhou 215123, Peoples R China

[3] Nanchang Univ, Coll Chem, IPEC, 999 Xuefu Ave, Nanchang 330031, Jiangxi, Peoples R China

来源：

ACS ENERGY LETTERS | 2019年 / 4卷 / 12期

基金：

中国博士后科学基金; 中国国家自然科学基金;

关键词：

PHOTOVOLTAIC PERFORMANCE; DEEP TRAPS; EFFICIENCY; TRANSPORT; RECOMBINATION; ARCHITECTURE; EXTRACTION; LAYER;

D O I：

10.1021/acsenergylett.9b02301

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Colloidal quantum dot (CQD) solar cells processed from pre-exchanged lead sulfide (PbS) inks have received great attention in the development of scalable and stable photovoltaic devices. However, the current hole-transporting material (HTM) 1,2-ethanedithiol-treated PbS (PbS-EDT) CQDs have several drawbacks in terms of commercialization, including the need for oxidation and multilayer fabrication. Conjugated polymers are an alternative HTM with adjustable properties. Here we propose a series of conjugated polymers (PBDB-T, PBDB-T(Si), PBDB-T(S), PBDB-T(F)) for PbS CQD solar cells as HTMs. Through polymer side-chain engineering, we optimize the model polymer PBDB-T to tune the energy levels, increase hole mobility, improve solid-state ordering, and increase free carrier density. CQD solar cells based on modified polymer PBDBT-(F) exhibit a best power conversion efficiency (PCE) of 11.2%, which outperforms the devices based on conventional PbS-EDT HTM (10.6%) and is currently the highest PCE for PbS solar cells based on organic HTMs.

引用

页码：2850 / 2858

页数：17

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