Aligned and Graded Type-II Ruddlesden–Popper Perovskite Films for Efficient Solar Cells

Jian Qing; Xiao Ke Liu; Mingjie Li; Feng Liu; Zhongcheng Yuan; Elizaveta Tiukalova; Zhibo Yan; Martial Duchamp; Shi Chen; Yuming Wang; Sai Bai; Jun Ming Liu; Henry J. Snaith; Chun Sing Lee; Tze Chien Sum; Feng Gao

doi:10.1002/aenm.201800185

Aligned and Graded Type-II Ruddlesden–Popper Perovskite Films for Efficient Solar Cells

Jian Qing, Xiao Ke Liu, Mingjie Li, Feng Liu, Zhongcheng Yuan, Elizaveta Tiukalova, Zhibo Yan, Martial Duchamp, Shi Chen, Yuming Wang, Sai Bai, Jun Ming Liu, Henry J. Snaith, Chun Sing Lee, Tze Chien Sum, Feng Gao

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

266 Scopus citations

Abstract

Recently, Ruddlesden–Popper perovskites (RPPs) have attracted increasing interests due to their promising stability. However, the efficiency of solar cells based on RPPs is much lower than that based on 3D perovskites, mainly attributed to their poor charge transport. Herein, a simple yet universal method for controlling the quality of RPP films by a synergistic effect of two additives in the precursor solution is presented. RPP films achieved by this method show (a) high quality with uniform morphology, enhanced crystallinity, and reduced density of sub-bandgap states, (b) vertically oriented perovskite frameworks that facilitate efficient charge transport, and (c) type-II band alignment that favors self-driven charge separation. Consequently, a hysteresis-free RPP solar cell with a power conversion efficiency exceeding 12%, which is much higher than that of the control device (1.5%), is achieved. The findings will spur new developments in the fabrication of high-quality, aligned, and graded RPP films essential for realizing efficient and stable perovskite solar cells.

Original language	English
Article number	1800185
Journal	Advanced Energy Materials
Volume	8
Issue number	21
DOIs	https://doi.org/10.1002/aenm.201800185
State	Published - Jul 25 2018
Externally published	Yes

Funding

J.Q., X.K.L., and M.L. contributed equally to this work. This work was supported by the Research Grants Council of the Hong Kong Special Administrative Region, China (Project No. 11304115), the National Natural Science Foundation of China (No. 51473138), the Joint NTU-LiU Ph.D. programme on Materials and Nanoscience, the Swedish Research Council VR (Grant No. 330-2014-6433), the European Commission Marie Skłodowska-Curie action (Grant Nos. INCA 600398 and 691210), and the Swedish Government Strategic Research Area in Materials Science on Functional Materials at Linköping University (Faculty Grant SFO-Mat-LiU No. 2009-00971). T.C.S. acknowledges the financial support from Nanyang Technological University start-up grant M4080514; the Ministry of Education Academic Research Fund Tier 1 grants RG101/15 and RG173/16, and Tier 2 grants MOE2014-T2-1-044, MOE2015-T2-2-015, and MOE2016-T2-1-034; and from the Singapore National Research Foundation through the Competitive Research Program NRF-CRP14-2014. X.K.L. would like to thank the VINNMER and Marie Skłodowska-Curie Fellowship (2016-02051) provided by Vinnova. The authors thank Quanzheng Tao (Linköping University) for assisting XRD measurements. The TEM measurement was performed at the Facility for Analysis, Characterization, Testing and Simulation (FACTS) in Nanyang Technological University, Singapore.

Funders	Funder number
European Commission Marie Skłodowska-Curie action	INCA 600398
FACTS
Swedish Research Council VR	330-2014-6433
VINNMER
Horizon 2020 Framework Programme	691210
Horizon 2020 Framework Programme
H2020 Marie Skłodowska-Curie Actions
National Research Foundation Singapore	NRF-CRP14-2014
National Research Foundation Singapore
Nanyang Technological University	M4080514
Nanyang Technological University
National Natural Science Foundation of China	51473138
National Natural Science Foundation of China
VINNOVA
Ministry of Education	RG101/15, MOE2016-T2-1-034, MOE2014-T2-1-044, RG173/16, MOE2015-T2-2-015
Ministry of Education
Research Grants Council, University Grants Committee	11304115
Research Grants Council, University Grants Committee
Linköpings Universitet	2009-00971
Linköpings Universitet

Keywords

2D
additives
charge separation
layered perovskite
solar cells

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1002/aenm.201800185

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title = "Aligned and Graded Type-II Ruddlesden–Popper Perovskite Films for Efficient Solar Cells",

abstract = "Recently, Ruddlesden–Popper perovskites (RPPs) have attracted increasing interests due to their promising stability. However, the efficiency of solar cells based on RPPs is much lower than that based on 3D perovskites, mainly attributed to their poor charge transport. Herein, a simple yet universal method for controlling the quality of RPP films by a synergistic effect of two additives in the precursor solution is presented. RPP films achieved by this method show (a) high quality with uniform morphology, enhanced crystallinity, and reduced density of sub-bandgap states, (b) vertically oriented perovskite frameworks that facilitate efficient charge transport, and (c) type-II band alignment that favors self-driven charge separation. Consequently, a hysteresis-free RPP solar cell with a power conversion efficiency exceeding 12%, which is much higher than that of the control device (1.5%), is achieved. The findings will spur new developments in the fabrication of high-quality, aligned, and graded RPP films essential for realizing efficient and stable perovskite solar cells.",

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author = "Jian Qing and Liu, {Xiao Ke} and Mingjie Li and Feng Liu and Zhongcheng Yuan and Elizaveta Tiukalova and Zhibo Yan and Martial Duchamp and Shi Chen and Yuming Wang and Sai Bai and Liu, {Jun Ming} and Snaith, {Henry J.} and Lee, {Chun Sing} and Sum, {Tze Chien} and Feng Gao",

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AU - Qing, Jian

AU - Liu, Xiao Ke

AU - Li, Mingjie

AU - Liu, Feng

AU - Yuan, Zhongcheng

AU - Tiukalova, Elizaveta

AU - Yan, Zhibo

AU - Duchamp, Martial

AU - Chen, Shi

AU - Wang, Yuming

AU - Bai, Sai

AU - Liu, Jun Ming

AU - Snaith, Henry J.

AU - Lee, Chun Sing

AU - Sum, Tze Chien

AU - Gao, Feng

PY - 2018/7/25

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AB - Recently, Ruddlesden–Popper perovskites (RPPs) have attracted increasing interests due to their promising stability. However, the efficiency of solar cells based on RPPs is much lower than that based on 3D perovskites, mainly attributed to their poor charge transport. Herein, a simple yet universal method for controlling the quality of RPP films by a synergistic effect of two additives in the precursor solution is presented. RPP films achieved by this method show (a) high quality with uniform morphology, enhanced crystallinity, and reduced density of sub-bandgap states, (b) vertically oriented perovskite frameworks that facilitate efficient charge transport, and (c) type-II band alignment that favors self-driven charge separation. Consequently, a hysteresis-free RPP solar cell with a power conversion efficiency exceeding 12%, which is much higher than that of the control device (1.5%), is achieved. The findings will spur new developments in the fabrication of high-quality, aligned, and graded RPP films essential for realizing efficient and stable perovskite solar cells.

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Aligned and Graded Type-II Ruddlesden–Popper Perovskite Films for Efficient Solar Cells

Abstract

Funding

Keywords

UN SDGs

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