Open AccessImproving the hole extraction by hexadecylbenzene modification for efficient perovskite solar cells
Author(s) -
Lisha Xie,
Xiaoyu Deng,
Chengbo Li,
Feng Hao
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/781/4/042042
Subject(s) - non blocking i/o , perovskite (structure) , nickel oxide , materials science , energy conversion efficiency , layer (electronics) , extraction (chemistry) , halide , oxide , perovskite solar cell , chemical engineering , optoelectronics , nickel , nanotechnology , inorganic chemistry , chemistry , metallurgy , catalysis , chromatography , organic chemistry , engineering
In highly efficient halide perovskite solar cells (PSCs), nickel oxide (NiO x ) have been widely used as an inorganic hole transport layer (HTL). However, the solution-processed NiOx films always have pinholes, along with inferior contact with perovskite layer. Herein, a surfactant of hexadecylbenzene (HAB) was applied to improve the hole extraction from perovskite to NiO x HTL. With the modification of HAB, a high quality perovskite layer was obtained. Due to the enhanced hole extraction, the HAB modified device showed a higher short-circuit current density ( J Sc ) and a power conversion efficiency of 17.11%. Therefore, this work offers a novel strategy in interfacial engineering for high-efficiency PSCs.