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

Institute of Electronics

Research output: Contribution to journal › Article

44 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
Article number	1807435
Journal	Advanced Materials
Volume	31
Issue number	14
DOIs	https://doi.org/10.1002/adma.201807435
State	Published - 5 Apr 2019

Keywords

band alignment
passivation
perovskite solar cells
semiconducting polymers

Access to Document

10.1002/adma.201807435

Link to publication in Scopus

Fingerprint Dive into the research topics of 'In Situ Back-Contact Passivation Improves Photovoltage and Fill Factor in Perovskite Solar Cells'. Together they form a unique fingerprint.

Cite this

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), [1807435]. https://doi.org/10.1002/adma.201807435

Tan, Furui ; Tan, Hairen ; Saidaminov, Makhsud I. ; Wei, Mingyang ; Liu, Mengxia ; Mei, Anyi ; Li, Peicheng ; Zhang, Bowen ; Tan, Chih Shan ; Gong, Xiwen ; Zhao, Yongbiao ; Kirmani, Ahmad R. ; Huang, Ziru ; Fan, James Z. ; Quintero-Bermudez, Rafael ; Kim, Junghwan ; Zhao, Yicheng ; Voznyy, Oleksandr ; Gao, Yueyue ; Zhang, Feng ; Richter, Lee J. ; Lu, Zheng Hong ; Zhang, Weifeng ; Sargent, Edward H. / In Situ Back-Contact Passivation Improves Photovoltage and Fill Factor in Perovskite Solar Cells. In: Advanced Materials. 2019 ; Vol. 31, No. 14.

@article{0c7c236503cb4742b7ff57bdfa5dd1a4,

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.}",

year = "2019",

month = apr,

day = "5",

doi = "10.1002/adma.201807435",

language = "English",

volume = "31",

journal = "Advanced Materials",

issn = "0935-9648",

publisher = "Wiley-Blackwell",

number = "14",

}

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

In Situ Back-Contact Passivation Improves Photovoltage and Fill Factor in Perovskite Solar Cells. / Tan, Furui; Tan, Hairen; Saidaminov, Makhsud I.; Wei, Mingyang; Liu, Mengxia; Mei, Anyi; Li, Peicheng; Zhang, Bowen; Tan, Chih Shan; Gong, Xiwen; Zhao, Yongbiao; Kirmani, Ahmad R.; Huang, Ziru; Fan, James Z.; Quintero-Bermudez, Rafael; Kim, Junghwan; Zhao, Yicheng; Voznyy, Oleksandr; Gao, Yueyue; Zhang, Feng; Richter, Lee J.; Lu, Zheng Hong; Zhang, Weifeng; Sargent, Edward H.

In: Advanced Materials, Vol. 31, No. 14, 1807435, 05.04.2019.

Research output: Contribution to journal › Article

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.

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

UR - http://www.scopus.com/inward/record.url?scp=85061572419&partnerID=8YFLogxK

U2 - 10.1002/adma.201807435

DO - 10.1002/adma.201807435

M3 - Article

C2 - 30740780

AN - SCOPUS:85061572419

VL - 31

JO - Advanced Materials

JF - Advanced Materials

SN - 0935-9648

IS - 14

M1 - 1807435

ER -