材料科学
非阻塞I/O
化学工程
润湿
富勒烯
有机太阳能电池
聚合物太阳能电池
太阳能电池
佩多:嘘
聚合物
接受者
溶剂
退火(玻璃)
光电子学
氧化物
氧化镍
纳米技术
图层(电子)
复合材料
有机化学
冶金
化学
物理
催化作用
工程类
凝聚态物理
作者
Hong Nhan Tran,Duc Quang Dao,Yung Jin Yoon,Yun Seop Shin,Jin San Choi,Jin Young Kim,Shinuk Cho
出处
期刊:Small
[Wiley]
日期:2021-06-24
卷期号:17 (31)
被引量:29
标识
DOI:10.1002/smll.202101729
摘要
Abstract Nickel oxide (NiO) offers intrinsic p ‐type behavior and high thermal and chemical stability, making it promising as a hole transport layer (HTL) material in inverted organic solar cells. However, its use in this application has been rare because of a wettability problem caused by use of water as base solvent and high‐temperature annealing requirements. In the present work, an annealing‐free solution‐processable method for NiO deposition is developed and applied in both conventional and inverted non‐fullerene polymer solar cells. To overcome the wettability problem, the typical DI water solvent is replaced with a mixed solvent of DI water and isopropyl alcohol with a small amount of 2‐butanol additive. This allows a NiO nanoparticle suspension (s‐NiO) to be deposited on a hydrophobic active layer surface. An inverted non‐fullerene solar cell based on a blend of p ‐type polymer PTB7‐Th and non‐fullerene acceptor IEICO‐4F exhibits the high efficiency of 11.23% with an s‐NiO HTL, comparable to the efficiency of an inverted solar cell with a MoO x HTL deposited by thermal evaporation. Conventionally structured devices including this s‐NiO layer show efficiency comparable to that of a conventional device with a PEDOT:PSS HTL.
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