Argon Plasma Treatment to Tune Perovskite Surface Composition for High Efficiency Solar Cells and Fast Photodetectors

Xun Xiao; Chunxiong Bao; Yanjun Fang; Jun Dai; Benjamin R. Ecker; Congcong Wang; Yuze Lin; Shi Tang; Ye Liu; Yehao Deng; Xiaopeng Zheng; Yongli Gao; Xiao Cheng Zeng; Jinsong Huang

doi:10.1002/adma.201705176

Argon Plasma Treatment to Tune Perovskite Surface Composition for High Efficiency Solar Cells and Fast Photodetectors

Xun Xiao, Chunxiong Bao, Yanjun Fang, Jun Dai, Benjamin R. Ecker, Congcong Wang, Yuze Lin, Shi Tang, Ye Liu, Yehao Deng, Xiaopeng Zheng, Yongli Gao, Xiao Cheng Zeng, Jinsong Huang

Chemistry

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

76 Scopus citations

Abstract

The surface composition of perovskite films is very sensitive to film processing and can deviate from the optimal, which generates unfavorable defects and results in efficiency loss in solar cells and slow response speed in photodetectors. An argon plasma treatment is introduced to modify the surface composition by tuning the ratio of organic and inorganic components as well as defect type before deposition of the passivating layer. It can efficiently enhance the charge collection across the perovskite–electrode interface by suppressing charge recombination. Therefore, perovskite solar cells with argon plasma treatment yield enhanced efficiency to 20.4% and perovskite photodetectors can reach their fastest respond speed, which is solely limited by the carrier mobility.

Original language	English (US)
Article number	1705176
Journal	Advanced Materials
Volume	30
Issue number	9
DOIs	https://doi.org/10.1002/adma.201705176
State	Published - Mar 1 2018

Keywords

argon plasma
perovskites
photodetectors
solar cells

ASJC Scopus subject areas

Materials Science(all)
Mechanics of Materials
Mechanical Engineering

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10.1002/adma.201705176

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title = "Argon Plasma Treatment to Tune Perovskite Surface Composition for High Efficiency Solar Cells and Fast Photodetectors",

abstract = "The surface composition of perovskite films is very sensitive to film processing and can deviate from the optimal, which generates unfavorable defects and results in efficiency loss in solar cells and slow response speed in photodetectors. An argon plasma treatment is introduced to modify the surface composition by tuning the ratio of organic and inorganic components as well as defect type before deposition of the passivating layer. It can efficiently enhance the charge collection across the perovskite–electrode interface by suppressing charge recombination. Therefore, perovskite solar cells with argon plasma treatment yield enhanced efficiency to 20.4% and perovskite photodetectors can reach their fastest respond speed, which is solely limited by the carrier mobility.",

keywords = "argon plasma, perovskites, photodetectors, solar cells",

author = "Xun Xiao and Chunxiong Bao and Yanjun Fang and Jun Dai and Ecker, {Benjamin R.} and Congcong Wang and Yuze Lin and Shi Tang and Ye Liu and Yehao Deng and Xiaopeng Zheng and Yongli Gao and Zeng, {Xiao Cheng} and Jinsong Huang",

note = "Funding Information: This work was supported in part by Air Force Office of Scientific Research (AFOSR) (Grant No. A9550-16-1-0299) and the National Science Foundation (NSF) through the Nebraska Materials Research Science and Engineering Center (MRSEC) (Grant No. DMR-1420645), and an NSF EPSCoR Track II grant (Grant No. OIA-1538893). Publisher Copyright: {\textcopyright} 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim",

year = "2018",

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doi = "10.1002/adma.201705176",

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T1 - Argon Plasma Treatment to Tune Perovskite Surface Composition for High Efficiency Solar Cells and Fast Photodetectors

AU - Xiao, Xun

AU - Bao, Chunxiong

AU - Fang, Yanjun

AU - Dai, Jun

AU - Ecker, Benjamin R.

AU - Wang, Congcong

AU - Lin, Yuze

AU - Tang, Shi

AU - Liu, Ye

AU - Deng, Yehao

AU - Zheng, Xiaopeng

AU - Gao, Yongli

AU - Zeng, Xiao Cheng

AU - Huang, Jinsong

N1 - Funding Information: This work was supported in part by Air Force Office of Scientific Research (AFOSR) (Grant No. A9550-16-1-0299) and the National Science Foundation (NSF) through the Nebraska Materials Research Science and Engineering Center (MRSEC) (Grant No. DMR-1420645), and an NSF EPSCoR Track II grant (Grant No. OIA-1538893). Publisher Copyright: © 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

PY - 2018/3/1

Y1 - 2018/3/1

N2 - The surface composition of perovskite films is very sensitive to film processing and can deviate from the optimal, which generates unfavorable defects and results in efficiency loss in solar cells and slow response speed in photodetectors. An argon plasma treatment is introduced to modify the surface composition by tuning the ratio of organic and inorganic components as well as defect type before deposition of the passivating layer. It can efficiently enhance the charge collection across the perovskite–electrode interface by suppressing charge recombination. Therefore, perovskite solar cells with argon plasma treatment yield enhanced efficiency to 20.4% and perovskite photodetectors can reach their fastest respond speed, which is solely limited by the carrier mobility.

AB - The surface composition of perovskite films is very sensitive to film processing and can deviate from the optimal, which generates unfavorable defects and results in efficiency loss in solar cells and slow response speed in photodetectors. An argon plasma treatment is introduced to modify the surface composition by tuning the ratio of organic and inorganic components as well as defect type before deposition of the passivating layer. It can efficiently enhance the charge collection across the perovskite–electrode interface by suppressing charge recombination. Therefore, perovskite solar cells with argon plasma treatment yield enhanced efficiency to 20.4% and perovskite photodetectors can reach their fastest respond speed, which is solely limited by the carrier mobility.

KW - argon plasma

KW - perovskites

KW - photodetectors

KW - solar cells

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Argon Plasma Treatment to Tune Perovskite Surface Composition for High Efficiency Solar Cells and Fast Photodetectors

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