Component Distribution Regulation in Sn-Pb Perovskite Solar Cells through Selective Molecular Interaction

Wenxiao Zhang; Haobo Yuan; Xiaodong Li; Xuemin Guo; Chunyan Lu; Acan Liu; Hui Yang; Lin Xu; Xueliang Shi; Zhiwei Fang; Haibo Yang; Ya Cheng; Junfeng Fang

doi:10.1002/adma.202303674

Component Distribution Regulation in Sn-Pb Perovskite Solar Cells through Selective Molecular Interaction

Wenxiao Zhang, Haobo Yuan, Xiaodong Li, Xuemin Guo, Chunyan Lu, Acan Liu, Hui Yang, Lin Xu, Xueliang Shi, Zhiwei Fang, Haibo Yang, Ya Cheng, Junfeng Fang

School of Chemistry and Molecular Engineering

East China Normal University

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

62 Scopus citations

Abstract

Tin-lead (Sn-Pb) perovskite solar cells (PSCs) with near-ideal bandgap still lag behind the pure lead PSCs. Disordered heterojunctions caused by inhomogeneous Sn/Pb ratio in the binary perovskite film induce large recombination loss. Here, an Sn-Pb perovskite film is reported with homogeneous component and energy distribution by introducing hydrazine sulfate (HS) in Sn perovskite precursor. HS can form hydrogen bond network and coordinate with FASnI₃ thus no longer bond with Pb²⁺, which reduces the crystallization rate of tin perovskite to the level of lead analog. The strong bonding between SO₄²⁻ and Sn²⁺ can also suppress its oxidation. As a result, the Sn-Pb PSCs with HS exhibit a significantly improved V_OC of 0.91 V along with a high efficiency of 23.17%. Meanwhile, the hydrogen bond interaction network, strong bonding between Sn²⁺ and sulfate ion also improve the thermal, storage, and air stability of resulting devices.

Original language	English
Article number	2303674
Journal	Advanced Materials
Volume	35
Issue number	39
DOIs	https://doi.org/10.1002/adma.202303674
State	Published - 27 Sep 2023

Keywords

crystallization rate
hydrogen bond network
tin-lead perovskite solar cells
uniform element and energy distribution

Access to Document

10.1002/adma.202303674

Cite this

@article{eb7a6301b8074428b57cf5a701b8b5b0,

title = "Component Distribution Regulation in Sn-Pb Perovskite Solar Cells through Selective Molecular Interaction",

abstract = "Tin-lead (Sn-Pb) perovskite solar cells (PSCs) with near-ideal bandgap still lag behind the pure lead PSCs. Disordered heterojunctions caused by inhomogeneous Sn/Pb ratio in the binary perovskite film induce large recombination loss. Here, an Sn-Pb perovskite film is reported with homogeneous component and energy distribution by introducing hydrazine sulfate (HS) in Sn perovskite precursor. HS can form hydrogen bond network and coordinate with FASnI3 thus no longer bond with Pb2+, which reduces the crystallization rate of tin perovskite to the level of lead analog. The strong bonding between SO42− and Sn2+ can also suppress its oxidation. As a result, the Sn-Pb PSCs with HS exhibit a significantly improved VOC of 0.91 V along with a high efficiency of 23.17\%. Meanwhile, the hydrogen bond interaction network, strong bonding between Sn2+ and sulfate ion also improve the thermal, storage, and air stability of resulting devices.",

keywords = "crystallization rate, hydrogen bond network, tin-lead perovskite solar cells, uniform element and energy distribution",

author = "Wenxiao Zhang and Haobo Yuan and Xiaodong Li and Xuemin Guo and Chunyan Lu and Acan Liu and Hui Yang and Lin Xu and Xueliang Shi and Zhiwei Fang and Haibo Yang and Ya Cheng and Junfeng Fang",

note = "Publisher Copyright: {\textcopyright} 2023 Wiley-VCH GmbH.",

year = "2023",

month = sep,

day = "27",

doi = "10.1002/adma.202303674",

language = "英语",

volume = "35",

journal = "Advanced Materials",

issn = "0935-9648",

publisher = "Wiley-Blackwell",

number = "39",

}

TY - JOUR

T1 - Component Distribution Regulation in Sn-Pb Perovskite Solar Cells through Selective Molecular Interaction

AU - Zhang, Wenxiao

AU - Yuan, Haobo

AU - Li, Xiaodong

AU - Guo, Xuemin

AU - Lu, Chunyan

AU - Liu, Acan

AU - Yang, Hui

AU - Xu, Lin

AU - Shi, Xueliang

AU - Fang, Zhiwei

AU - Yang, Haibo

AU - Cheng, Ya

AU - Fang, Junfeng

PY - 2023/9/27

Y1 - 2023/9/27

N2 - Tin-lead (Sn-Pb) perovskite solar cells (PSCs) with near-ideal bandgap still lag behind the pure lead PSCs. Disordered heterojunctions caused by inhomogeneous Sn/Pb ratio in the binary perovskite film induce large recombination loss. Here, an Sn-Pb perovskite film is reported with homogeneous component and energy distribution by introducing hydrazine sulfate (HS) in Sn perovskite precursor. HS can form hydrogen bond network and coordinate with FASnI3 thus no longer bond with Pb2+, which reduces the crystallization rate of tin perovskite to the level of lead analog. The strong bonding between SO42− and Sn2+ can also suppress its oxidation. As a result, the Sn-Pb PSCs with HS exhibit a significantly improved VOC of 0.91 V along with a high efficiency of 23.17%. Meanwhile, the hydrogen bond interaction network, strong bonding between Sn2+ and sulfate ion also improve the thermal, storage, and air stability of resulting devices.

AB - Tin-lead (Sn-Pb) perovskite solar cells (PSCs) with near-ideal bandgap still lag behind the pure lead PSCs. Disordered heterojunctions caused by inhomogeneous Sn/Pb ratio in the binary perovskite film induce large recombination loss. Here, an Sn-Pb perovskite film is reported with homogeneous component and energy distribution by introducing hydrazine sulfate (HS) in Sn perovskite precursor. HS can form hydrogen bond network and coordinate with FASnI3 thus no longer bond with Pb2+, which reduces the crystallization rate of tin perovskite to the level of lead analog. The strong bonding between SO42− and Sn2+ can also suppress its oxidation. As a result, the Sn-Pb PSCs with HS exhibit a significantly improved VOC of 0.91 V along with a high efficiency of 23.17%. Meanwhile, the hydrogen bond interaction network, strong bonding between Sn2+ and sulfate ion also improve the thermal, storage, and air stability of resulting devices.

KW - crystallization rate

KW - hydrogen bond network

KW - tin-lead perovskite solar cells

KW - uniform element and energy distribution

UR - https://www.scopus.com/pages/publications/85169536667

U2 - 10.1002/adma.202303674

DO - 10.1002/adma.202303674

M3 - 文章

C2 - 37325993

AN - SCOPUS:85169536667

SN - 0935-9648

VL - 35

JO - Advanced Materials

JF - Advanced Materials

IS - 39

M1 - 2303674

ER -

Component Distribution Regulation in Sn-Pb Perovskite Solar Cells through Selective Molecular Interaction

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this