Acetic acid assisted crystallization strategy for high efficiency and long-term stable perovskite solar cell

Li Yong, Junwei Shi, Jianghui Zheng, Jueming Bing, Jianyu Yuan, Yongyoon Cho, Shi Tang, Meng Zhang, Yin Yao, Cho Fai Jonathan Lau, Da Seul Lee, Chwenhaw Liao, Martin A. Green, Shujuan Huang, Wanli Ma, Anita W. Y. Ho-Baillie

Research output: Contribution to journalArticleResearchpeer-review

Abstract

Improving the quality of perovskite poly-crystalline film is essential for the performance of associated solar cells approaching their theoretical limit efficiency. Pinholes, unwanted defects, and nonperovskite phase can be easily generated during film formation, hampering device performance and stability. Here, a simple method is introduced to prepare perovskite film with excellent optoelectronic property by using acetic acid (Ac) as an antisolvent to control perovskite crystallization. Results from a variety of characterizations suggest that the small amount of Ac not only reduces the perovskite film roughness and residual PbI2 but also generates a passivation effect from the electron-rich carbonyl group (C=O) in Ac. The best devices produce a PCE of 22.0% for Cs0.05FA0.80MA0.15Pb(I0.85Br0.15)3 and 23.0% for Cs0.05FA0.90MA0.05Pb(I0.95Br0.05)3 on 0.159 cm2 with negligible hysteresis. This further improves device stability producing a cell that maintained 96% of its initial efficiency after 2400 h storage in ambient environment (with controlled relative humidity (RH) <30%) without any encapsulation.

LanguageEnglish
Article number1903368
JournalAdvanced Science
DOIs
Publication statusE-pub ahead of print - 23 Jan 2020

Fingerprint

Crystallization
acetic acid
Acetic acid
Acetic Acid
Perovskite
solar cells
crystallization
Equipment and Supplies
Controlled Environment
acids
Acids
pinholes
Humidity
Encapsulation
Passivation
Optoelectronic devices
passivity
Hysteresis
humidity
Atmospheric humidity

Keywords

  • crystal engineering
  • perovskites
  • photovoltaic
  • stability

Cite this

Yong, Li ; Shi, Junwei ; Zheng, Jianghui ; Bing, Jueming ; Yuan, Jianyu ; Cho, Yongyoon ; Tang, Shi ; Zhang, Meng ; Yao, Yin ; Lau, Cho Fai Jonathan ; Lee, Da Seul ; Liao, Chwenhaw ; Green, Martin A. ; Huang, Shujuan ; Ma, Wanli ; Ho-Baillie, Anita W. Y. / Acetic acid assisted crystallization strategy for high efficiency and long-term stable perovskite solar cell. In: Advanced Science. 2020.
@article{7ac4e2ee02724905b882718cdadb73cf,
title = "Acetic acid assisted crystallization strategy for high efficiency and long-term stable perovskite solar cell",
abstract = "Improving the quality of perovskite poly-crystalline film is essential for the performance of associated solar cells approaching their theoretical limit efficiency. Pinholes, unwanted defects, and nonperovskite phase can be easily generated during film formation, hampering device performance and stability. Here, a simple method is introduced to prepare perovskite film with excellent optoelectronic property by using acetic acid (Ac) as an antisolvent to control perovskite crystallization. Results from a variety of characterizations suggest that the small amount of Ac not only reduces the perovskite film roughness and residual PbI2 but also generates a passivation effect from the electron-rich carbonyl group (C=O) in Ac. The best devices produce a PCE of 22.0{\%} for Cs0.05FA0.80MA0.15Pb(I0.85Br0.15)3 and 23.0{\%} for Cs0.05FA0.90MA0.05Pb(I0.95Br0.05)3 on 0.159 cm2 with negligible hysteresis. This further improves device stability producing a cell that maintained 96{\%} of its initial efficiency after 2400 h storage in ambient environment (with controlled relative humidity (RH) <30{\%}) without any encapsulation.",
keywords = "crystal engineering, perovskites, photovoltaic, stability",
author = "Li Yong and Junwei Shi and Jianghui Zheng and Jueming Bing and Jianyu Yuan and Yongyoon Cho and Shi Tang and Meng Zhang and Yin Yao and Lau, {Cho Fai Jonathan} and Lee, {Da Seul} and Chwenhaw Liao and Green, {Martin A.} and Shujuan Huang and Wanli Ma and Ho-Baillie, {Anita W. Y.}",
year = "2020",
month = "1",
day = "23",
doi = "10.1002/advs.201903368",
language = "English",
journal = "Advanced Science",
issn = "2198-3844",
publisher = "Wiley-Blackwell, Wiley",

}

Yong, L, Shi, J, Zheng, J, Bing, J, Yuan, J, Cho, Y, Tang, S, Zhang, M, Yao, Y, Lau, CFJ, Lee, DS, Liao, C, Green, MA, Huang, S, Ma, W & Ho-Baillie, AWY 2020, 'Acetic acid assisted crystallization strategy for high efficiency and long-term stable perovskite solar cell', Advanced Science. https://doi.org/10.1002/advs.201903368

Acetic acid assisted crystallization strategy for high efficiency and long-term stable perovskite solar cell. / Yong, Li; Shi, Junwei; Zheng, Jianghui; Bing, Jueming; Yuan, Jianyu; Cho, Yongyoon; Tang, Shi; Zhang, Meng; Yao, Yin; Lau, Cho Fai Jonathan; Lee, Da Seul; Liao, Chwenhaw; Green, Martin A.; Huang, Shujuan; Ma, Wanli; Ho-Baillie, Anita W. Y.

In: Advanced Science, 23.01.2020.

Research output: Contribution to journalArticleResearchpeer-review

TY - JOUR

T1 - Acetic acid assisted crystallization strategy for high efficiency and long-term stable perovskite solar cell

AU - Yong, Li

AU - Shi, Junwei

AU - Zheng, Jianghui

AU - Bing, Jueming

AU - Yuan, Jianyu

AU - Cho, Yongyoon

AU - Tang, Shi

AU - Zhang, Meng

AU - Yao, Yin

AU - Lau, Cho Fai Jonathan

AU - Lee, Da Seul

AU - Liao, Chwenhaw

AU - Green, Martin A.

AU - Huang, Shujuan

AU - Ma, Wanli

AU - Ho-Baillie, Anita W. Y.

PY - 2020/1/23

Y1 - 2020/1/23

N2 - Improving the quality of perovskite poly-crystalline film is essential for the performance of associated solar cells approaching their theoretical limit efficiency. Pinholes, unwanted defects, and nonperovskite phase can be easily generated during film formation, hampering device performance and stability. Here, a simple method is introduced to prepare perovskite film with excellent optoelectronic property by using acetic acid (Ac) as an antisolvent to control perovskite crystallization. Results from a variety of characterizations suggest that the small amount of Ac not only reduces the perovskite film roughness and residual PbI2 but also generates a passivation effect from the electron-rich carbonyl group (C=O) in Ac. The best devices produce a PCE of 22.0% for Cs0.05FA0.80MA0.15Pb(I0.85Br0.15)3 and 23.0% for Cs0.05FA0.90MA0.05Pb(I0.95Br0.05)3 on 0.159 cm2 with negligible hysteresis. This further improves device stability producing a cell that maintained 96% of its initial efficiency after 2400 h storage in ambient environment (with controlled relative humidity (RH) <30%) without any encapsulation.

AB - Improving the quality of perovskite poly-crystalline film is essential for the performance of associated solar cells approaching their theoretical limit efficiency. Pinholes, unwanted defects, and nonperovskite phase can be easily generated during film formation, hampering device performance and stability. Here, a simple method is introduced to prepare perovskite film with excellent optoelectronic property by using acetic acid (Ac) as an antisolvent to control perovskite crystallization. Results from a variety of characterizations suggest that the small amount of Ac not only reduces the perovskite film roughness and residual PbI2 but also generates a passivation effect from the electron-rich carbonyl group (C=O) in Ac. The best devices produce a PCE of 22.0% for Cs0.05FA0.80MA0.15Pb(I0.85Br0.15)3 and 23.0% for Cs0.05FA0.90MA0.05Pb(I0.95Br0.05)3 on 0.159 cm2 with negligible hysteresis. This further improves device stability producing a cell that maintained 96% of its initial efficiency after 2400 h storage in ambient environment (with controlled relative humidity (RH) <30%) without any encapsulation.

KW - crystal engineering

KW - perovskites

KW - photovoltaic

KW - stability

UR - http://www.scopus.com/inward/record.url?scp=85078662997&partnerID=8YFLogxK

U2 - 10.1002/advs.201903368

DO - 10.1002/advs.201903368

M3 - Article

JO - Advanced Science

T2 - Advanced Science

JF - Advanced Science

SN - 2198-3844

M1 - 1903368

ER -