In Situ Back-Contact Passivation Improves Photovoltage and Fill Factor in Perovskite Solar Cells

Furui Tan; Hairen Tan; Makhsud I. Saidaminov; Mingyang Wei; Mengxia Liu; Anyi Mei; Peicheng Li; Bowen Zhang; Chih Shan Tan; Xiwen Gong; Yongbiao Zhao; Ahmad R. Kirmani; Ziru Huang; James Z. Fan; Rafael Quintero-Bermudez; Junghwan Kim; Yicheng Zhao; Oleksandr Voznyy; Yueyue Gao; Feng Zhang; Lee J. Richter; Zheng Hong Lu; Weifeng Zhang; Edward H. Sargent

doi:10.1002/adma.201807435

In Situ Back-Contact Passivation Improves Photovoltage and Fill Factor in Perovskite Solar Cells

Furui Tan, Hairen Tan^*, Makhsud I. Saidaminov, Mingyang Wei, Mengxia Liu, Anyi Mei, Peicheng Li, Bowen Zhang, Chih Shan Tan, Xiwen Gong, Yongbiao Zhao, Ahmad R. Kirmani, Ziru Huang, James Z. Fan, Rafael Quintero-Bermudez, Junghwan Kim, Yicheng Zhao, Oleksandr Voznyy, Yueyue Gao, Feng ZhangLee J. Richter, Zheng Hong Lu, Weifeng Zhang, Edward H. Sargent

^*Corresponding author for this work

Chemistry

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

151 Scopus citations

Abstract

Organic–inorganic hybrid perovskite solar cells (PSCs) have seen a rapid rise in power conversion efficiencies in recent years; however, they still suffer from interfacial recombination and charge extraction losses at interfaces between the perovskite absorber and the charge–transport layers. Here, in situ back-contact passivation (BCP) that reduces interfacial and extraction losses between the perovskite absorber and the hole transport layer (HTL) is reported. A thin layer of nondoped semiconducting polymer at the perovskite/HTL interface is introduced and it is shown that the use of the semiconductor polymer permits—in contrast with previously studied insulator-based passivants—the use of a relatively thick passivating layer. It is shown that a flat-band alignment between the perovskite and polymer passivation layers achieves a high photovoltage and fill factor: the resultant BCP enables a photovoltage of 1.15 V and a fill factor of 83% in 1.53 eV bandgap PSCs, leading to an efficiency of 21.6% in planar solar cells.

Original language	English (US)
Article number	1807435
Journal	Advanced Materials
Volume	31
Issue number	14
DOIs	https://doi.org/10.1002/adma.201807435
State	Published - Apr 5 2019

Funding

F.T. and H.T. contributed equally to this work. This publication is based in part on work supported by the US Office of Naval Research (Grant Award No.: N00014-17-1-2524), by the Ontario Research Fund Research Excellence Program, and by the Natural Sciences and Engineering Research Council (NSERC) of Canada. The work of F.T. was also supported by the China Scholarship Council (201608410244). This work was also supported by the National Natural Science Foundation of China (Grant no. 61306019), the Natural Science Foundation of Henan Province (Grant no. 162300410026), the Key Member of Young Teachers (Grant no. 2016GGJS-019), and the Henan University Fund. H.T. acknowledges the Rubicon grant (680-50-1511) from the Netherlands Organisation for Scientific Research (NWO) and the National 1000 Young Talents award in China. The authors thank P. M. Brodersen from Ontario Centre for Characterization of Advanced Materials (OCCAM) for TOF-SIMS measurements and analysis. Beamline 7.3.3 of the Advanced Light Source was supported by the Director of the Office of Science, Office of Basic Energy Sciences, of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231. M.I.S. acknowledges the support of the Banting Postdoctoral Fellowship Program, administered by the Government of Canada.

Keywords

band alignment
passivation
perovskite solar cells
semiconducting polymers

ASJC Scopus subject areas

General Materials Science
Mechanics of Materials
Mechanical Engineering

UN SDGs

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

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Tan, F., Tan, H., Saidaminov, M. I., Wei, M., Liu, M., Mei, A., Li, P., Zhang, B., Tan, C. S., Gong, X., Zhao, Y., Kirmani, A. R., Huang, Z., Fan, J. Z., Quintero-Bermudez, R., Kim, J., Zhao, Y., Voznyy, O., Gao, Y., ... Sargent, E. H. (2019). In Situ Back-Contact Passivation Improves Photovoltage and Fill Factor in Perovskite Solar Cells. Advanced Materials, 31(14), Article 1807435. https://doi.org/10.1002/adma.201807435

@article{69ca45e009894055b99078dad5d8f035,

title = "In Situ Back-Contact Passivation Improves Photovoltage and Fill Factor in Perovskite Solar Cells",

abstract = "Organic–inorganic hybrid perovskite solar cells (PSCs) have seen a rapid rise in power conversion efficiencies in recent years; however, they still suffer from interfacial recombination and charge extraction losses at interfaces between the perovskite absorber and the charge–transport layers. Here, in situ back-contact passivation (BCP) that reduces interfacial and extraction losses between the perovskite absorber and the hole transport layer (HTL) is reported. A thin layer of nondoped semiconducting polymer at the perovskite/HTL interface is introduced and it is shown that the use of the semiconductor polymer permits—in contrast with previously studied insulator-based passivants—the use of a relatively thick passivating layer. It is shown that a flat-band alignment between the perovskite and polymer passivation layers achieves a high photovoltage and fill factor: the resultant BCP enables a photovoltage of 1.15 V and a fill factor of 83% in 1.53 eV bandgap PSCs, leading to an efficiency of 21.6% in planar solar cells.",

keywords = "band alignment, passivation, perovskite solar cells, semiconducting polymers",

author = "Furui Tan and Hairen Tan and Saidaminov, {Makhsud I.} and Mingyang Wei and Mengxia Liu and Anyi Mei and Peicheng Li and Bowen Zhang and Tan, {Chih Shan} and Xiwen Gong and Yongbiao Zhao and Kirmani, {Ahmad R.} and Ziru Huang and Fan, {James Z.} and Rafael Quintero-Bermudez and Junghwan Kim and Yicheng Zhao and Oleksandr Voznyy and Yueyue Gao and Feng Zhang and Richter, {Lee J.} and Lu, {Zheng Hong} and Weifeng Zhang and Sargent, {Edward H.}",

note = "Funding Information: F.T. and H.T. contributed equally to this work. This publication is based in part on work supported by the US Office of Naval Research (Grant Award No.: N00014-17-1-2524), by the Ontario Research Fund Research Excellence Program, and by the Natural Sciences and Engineering Research Council (NSERC) of Canada. The work of F.T. was also supported by the China Scholarship Council (201608410244). This work was also supported by the National Natural Science Foundation of China (Grant no. 61306019), the Natural Science Foundation of Henan Province (Grant no. 162300410026), the Key Member of Young Teachers (Grant no. 2016GGJS-019), and the Henan University Fund. H.T. acknowledges the Rubicon grant (680-50-1511) from the Netherlands Organisation for Scientific Research (NWO) and the National 1000 Young Talents award in China. The authors thank P. M. Brodersen from Ontario Centre for Characterization of Advanced Materials (OCCAM) for TOF-SIMS measurements and analysis. Beamline 7.3.3 of the Advanced Light Source was supported by the Director of the Office of Science, Office of Basic Energy Sciences, of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231. M.I.S. acknowledges the support of the Banting Postdoctoral Fellowship Program, administered by the Government of Canada. Publisher Copyright: {\textcopyright} 2019 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim",

year = "2019",

month = apr,

day = "5",

doi = "10.1002/adma.201807435",

language = "English (US)",

volume = "31",

journal = "Advanced Materials",

issn = "0935-9648",

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number = "14",

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Tan, F, Tan, H, Saidaminov, MI, Wei, M, Liu, M, Mei, A, Li, P, Zhang, B, Tan, CS, Gong, X, Zhao, Y, Kirmani, AR, Huang, Z, Fan, JZ, Quintero-Bermudez, R, Kim, J, Zhao, Y, Voznyy, O, Gao, Y, Zhang, F, Richter, LJ, Lu, ZH, Zhang, W & Sargent, EH 2019, 'In Situ Back-Contact Passivation Improves Photovoltage and Fill Factor in Perovskite Solar Cells', Advanced Materials, vol. 31, no. 14, 1807435. https://doi.org/10.1002/adma.201807435

TY - JOUR

T1 - In Situ Back-Contact Passivation Improves Photovoltage and Fill Factor in Perovskite Solar Cells

AU - Tan, Furui

AU - Tan, Hairen

AU - Saidaminov, Makhsud I.

AU - Wei, Mingyang

AU - Liu, Mengxia

AU - Mei, Anyi

AU - Li, Peicheng

AU - Zhang, Bowen

AU - Tan, Chih Shan

AU - Gong, Xiwen

AU - Zhao, Yongbiao

AU - Kirmani, Ahmad R.

AU - Huang, Ziru

AU - Fan, James Z.

AU - Quintero-Bermudez, Rafael

AU - Kim, Junghwan

AU - Zhao, Yicheng

AU - Voznyy, Oleksandr

AU - Gao, Yueyue

AU - Zhang, Feng

AU - Richter, Lee J.

AU - Lu, Zheng Hong

AU - Zhang, Weifeng

AU - Sargent, Edward H.

N1 - Funding Information: F.T. and H.T. contributed equally to this work. This publication is based in part on work supported by the US Office of Naval Research (Grant Award No.: N00014-17-1-2524), by the Ontario Research Fund Research Excellence Program, and by the Natural Sciences and Engineering Research Council (NSERC) of Canada. The work of F.T. was also supported by the China Scholarship Council (201608410244). This work was also supported by the National Natural Science Foundation of China (Grant no. 61306019), the Natural Science Foundation of Henan Province (Grant no. 162300410026), the Key Member of Young Teachers (Grant no. 2016GGJS-019), and the Henan University Fund. H.T. acknowledges the Rubicon grant (680-50-1511) from the Netherlands Organisation for Scientific Research (NWO) and the National 1000 Young Talents award in China. The authors thank P. M. Brodersen from Ontario Centre for Characterization of Advanced Materials (OCCAM) for TOF-SIMS measurements and analysis. Beamline 7.3.3 of the Advanced Light Source was supported by the Director of the Office of Science, Office of Basic Energy Sciences, of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231. M.I.S. acknowledges the support of the Banting Postdoctoral Fellowship Program, administered by the Government of Canada. Publisher Copyright: © 2019 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

PY - 2019/4/5

Y1 - 2019/4/5

N2 - Organic–inorganic hybrid perovskite solar cells (PSCs) have seen a rapid rise in power conversion efficiencies in recent years; however, they still suffer from interfacial recombination and charge extraction losses at interfaces between the perovskite absorber and the charge–transport layers. Here, in situ back-contact passivation (BCP) that reduces interfacial and extraction losses between the perovskite absorber and the hole transport layer (HTL) is reported. A thin layer of nondoped semiconducting polymer at the perovskite/HTL interface is introduced and it is shown that the use of the semiconductor polymer permits—in contrast with previously studied insulator-based passivants—the use of a relatively thick passivating layer. It is shown that a flat-band alignment between the perovskite and polymer passivation layers achieves a high photovoltage and fill factor: the resultant BCP enables a photovoltage of 1.15 V and a fill factor of 83% in 1.53 eV bandgap PSCs, leading to an efficiency of 21.6% in planar solar cells.

AB - Organic–inorganic hybrid perovskite solar cells (PSCs) have seen a rapid rise in power conversion efficiencies in recent years; however, they still suffer from interfacial recombination and charge extraction losses at interfaces between the perovskite absorber and the charge–transport layers. Here, in situ back-contact passivation (BCP) that reduces interfacial and extraction losses between the perovskite absorber and the hole transport layer (HTL) is reported. A thin layer of nondoped semiconducting polymer at the perovskite/HTL interface is introduced and it is shown that the use of the semiconductor polymer permits—in contrast with previously studied insulator-based passivants—the use of a relatively thick passivating layer. It is shown that a flat-band alignment between the perovskite and polymer passivation layers achieves a high photovoltage and fill factor: the resultant BCP enables a photovoltage of 1.15 V and a fill factor of 83% in 1.53 eV bandgap PSCs, leading to an efficiency of 21.6% in planar solar cells.

KW - band alignment

KW - passivation

KW - perovskite solar cells

KW - semiconducting polymers

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DO - 10.1002/adma.201807435

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SN - 0935-9648

VL - 31

JO - Advanced Materials

JF - Advanced Materials

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ER -

In Situ Back-Contact Passivation Improves Photovoltage and Fill Factor in Perovskite Solar Cells

Abstract

Funding

Keywords

ASJC Scopus subject areas

UN SDGs

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