Photoconductive NiOx hole transport layer for efficient perovskite solar cells

Xiaoyan Zhao; Wenxiao Zhang; Xiuxiu Feng; Xuemin Guo; Chunyan Lu; Xiaodong Li; Junfeng Fang

doi:10.1016/j.cej.2022.135140

Photoconductive NiO_x hole transport layer for efficient perovskite solar cells

Xiaoyan Zhao
, Wenxiao Zhang
, Xiuxiu Feng
, Xuemin Guo
, Chunyan Lu
, Xiaodong Li^*
, Junfeng Fang

^*Corresponding author for this work

East China Normal University

Research output: Contribution to journal › Article › peer-review

36 Scopus citations

Abstract

NiO_x is widely applied in perovskite solar cells (PSCs) as a hole transport layer. However, its poor conductivity limits the further improvement of device performance. Motivated by photoconductive phenomenon, here we propose a photoconductive NiO_x-Pc hole transport layer in PSCs through combining with phthalocyanine (Pc). Under illumination, Pc molecule absorbs light and will be excited. Then photogenerated charges on Pc molecule will transfer to NiO_x spontaneously and increase the hole density of NiO_x film, thus improving its conductivity. As a result, > 300% increase in conductivity is observed in NiO_x-Pc film and its conductivity reaches 4.6 * 10^-4 S m⁻¹. PSCs with NiO_x-Pc exhibit high efficiency of 21.68%, which is much higher than control devices (19.74%). In addition, device stability is also improved in PSCs with NiO_x-Pc and over 95%of initial efficiency is retained after 85 °C for 800 h.

Original language	English
Article number	135140
Journal	Chemical Engineering Journal
Volume	435
DOIs	https://doi.org/10.1016/j.cej.2022.135140
State	Published - 1 May 2022
Externally published	Yes

Keywords

Hole transport layer
NiO
Perovskite solar cells
Photoconductivity
Phthalocyanine

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10.1016/j.cej.2022.135140

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@article{56a185bb5b2e46fb971e25ebf94e2d6b,

title = "Photoconductive NiOx hole transport layer for efficient perovskite solar cells",

abstract = "NiOx is widely applied in perovskite solar cells (PSCs) as a hole transport layer. However, its poor conductivity limits the further improvement of device performance. Motivated by photoconductive phenomenon, here we propose a photoconductive NiOx-Pc hole transport layer in PSCs through combining with phthalocyanine (Pc). Under illumination, Pc molecule absorbs light and will be excited. Then photogenerated charges on Pc molecule will transfer to NiOx spontaneously and increase the hole density of NiOx film, thus improving its conductivity. As a result, > 300\% increase in conductivity is observed in NiOx-Pc film and its conductivity reaches 4.6 * 10-4 S m−1. PSCs with NiOx-Pc exhibit high efficiency of 21.68\%, which is much higher than control devices (19.74\%). In addition, device stability is also improved in PSCs with NiOx-Pc and over 95\%of initial efficiency is retained after 85 °C for 800 h.",

keywords = "Hole transport layer, NiO, Perovskite solar cells, Photoconductivity, Phthalocyanine",

author = "Xiaoyan Zhao and Wenxiao Zhang and Xiuxiu Feng and Xuemin Guo and Chunyan Lu and Xiaodong Li and Junfeng Fang",

note = "Publisher Copyright: {\textcopyright} 2022 Elsevier B.V.",

year = "2022",

month = may,

day = "1",

doi = "10.1016/j.cej.2022.135140",

language = "英语",

volume = "435",

journal = "Chemical Engineering Journal",

issn = "1385-8947",

publisher = "Elsevier B.V.",

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TY - JOUR

T1 - Photoconductive NiOx hole transport layer for efficient perovskite solar cells

AU - Zhao, Xiaoyan

AU - Zhang, Wenxiao

AU - Feng, Xiuxiu

AU - Guo, Xuemin

AU - Lu, Chunyan

AU - Li, Xiaodong

AU - Fang, Junfeng

PY - 2022/5/1

Y1 - 2022/5/1

N2 - NiOx is widely applied in perovskite solar cells (PSCs) as a hole transport layer. However, its poor conductivity limits the further improvement of device performance. Motivated by photoconductive phenomenon, here we propose a photoconductive NiOx-Pc hole transport layer in PSCs through combining with phthalocyanine (Pc). Under illumination, Pc molecule absorbs light and will be excited. Then photogenerated charges on Pc molecule will transfer to NiOx spontaneously and increase the hole density of NiOx film, thus improving its conductivity. As a result, > 300% increase in conductivity is observed in NiOx-Pc film and its conductivity reaches 4.6 * 10-4 S m−1. PSCs with NiOx-Pc exhibit high efficiency of 21.68%, which is much higher than control devices (19.74%). In addition, device stability is also improved in PSCs with NiOx-Pc and over 95%of initial efficiency is retained after 85 °C for 800 h.

AB - NiOx is widely applied in perovskite solar cells (PSCs) as a hole transport layer. However, its poor conductivity limits the further improvement of device performance. Motivated by photoconductive phenomenon, here we propose a photoconductive NiOx-Pc hole transport layer in PSCs through combining with phthalocyanine (Pc). Under illumination, Pc molecule absorbs light and will be excited. Then photogenerated charges on Pc molecule will transfer to NiOx spontaneously and increase the hole density of NiOx film, thus improving its conductivity. As a result, > 300% increase in conductivity is observed in NiOx-Pc film and its conductivity reaches 4.6 * 10-4 S m−1. PSCs with NiOx-Pc exhibit high efficiency of 21.68%, which is much higher than control devices (19.74%). In addition, device stability is also improved in PSCs with NiOx-Pc and over 95%of initial efficiency is retained after 85 °C for 800 h.

KW - Hole transport layer

KW - NiO

KW - Perovskite solar cells

KW - Photoconductivity

KW - Phthalocyanine

UR - https://www.scopus.com/pages/publications/85124290294

U2 - 10.1016/j.cej.2022.135140

DO - 10.1016/j.cej.2022.135140

M3 - 文章

AN - SCOPUS:85124290294

SN - 1385-8947

VL - 435

JO - Chemical Engineering Journal

JF - Chemical Engineering Journal

M1 - 135140

ER -

Photoconductive NiO_x hole transport layer for efficient perovskite solar cells

Abstract

Keywords

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