Controlled Nucleation and Oriented Crystallization of Methylammonium-Free Perovskites via In Situ Generated 2D Perovskite Phases

Yuping Gao; Zonglong Song; Qiang Fu; Yu Chen; Liu Yang; Ziyang Hu; Yongsheng Chen; Yongsheng Liu

doi:10.1002/adma.202405921

Controlled Nucleation and Oriented Crystallization of Methylammonium-Free Perovskites via In Situ Generated 2D Perovskite Phases

Yuping Gao, Zonglong Song, Qiang Fu, Yu Chen, Liu Yang, Ziyang Hu, Yongsheng Chen, Yongsheng Liu^*

^*Corresponding author for this work

Department of Materials Science and Engineering

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

30 Citations (Scopus)

Abstract

Enhancing stability while maintaining high efficiency is among the primary challenges in the commercialization of perovskite solar cells (PSCs). Here, a crystal growth technique assisted by in situ generated 2D perovskite phases has been developed to construct high-quality 2D/3D perovskite films. The in situ generated 2D perovskite serve as templates for regulating the nucleation and oriented crystal growth in the α-FAPbI₃-rich film. This led to a high film quality with much reduced trap density and an ultralong carrier lifetime. The obtained perovskite film shows excellent stability under extreme environment conditions (T = 200 °C, RH = 75 ± 5%). The corresponding PSC achieved an efficiency of 26.16% (certified 25.84%), along with excellent operational stability (T93 > 1300 h, T ≅ 50 °C) as well as outstanding high and low temperature cycle stability. © 2024 Wiley-VCH GmbH.

Original language	English
Article number	2405921
Journal	Advanced Materials
Volume	36
Issue number	33
Online published	21 Jun 2024
DOIs	https://doi.org/10.1002/adma.202405921
Publication status	Published - 15 Aug 2024

Research Keywords

2D perovskite
crystal orientation
morphology
perovskite solar cells
stability

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title = "Controlled Nucleation and Oriented Crystallization of Methylammonium-Free Perovskites via In Situ Generated 2D Perovskite Phases",

abstract = "Enhancing stability while maintaining high efficiency is among the primary challenges in the commercialization of perovskite solar cells (PSCs). Here, a crystal growth technique assisted by in situ generated 2D perovskite phases has been developed to construct high-quality 2D/3D perovskite films. The in situ generated 2D perovskite serve as templates for regulating the nucleation and oriented crystal growth in the α-FAPbI3-rich film. This led to a high film quality with much reduced trap density and an ultralong carrier lifetime. The obtained perovskite film shows excellent stability under extreme environment conditions (T = 200 °C, RH = 75 ± 5%). The corresponding PSC achieved an efficiency of 26.16% (certified 25.84%), along with excellent operational stability (T93 > 1300 h, T ≅ 50 °C) as well as outstanding high and low temperature cycle stability. {\textcopyright} 2024 Wiley-VCH GmbH.",

keywords = "2D perovskite, crystal orientation, morphology, perovskite solar cells, stability",

author = "Yuping Gao and Zonglong Song and Qiang Fu and Yu Chen and Liu Yang and Ziyang Hu and Yongsheng Chen and Yongsheng Liu",

year = "2024",

month = aug,

day = "15",

doi = "10.1002/adma.202405921",

language = "English",

volume = "36",

journal = "Advanced Materials",

issn = "0935-9648",

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TY - JOUR

T1 - Controlled Nucleation and Oriented Crystallization of Methylammonium-Free Perovskites via In Situ Generated 2D Perovskite Phases

AU - Gao, Yuping

AU - Song, Zonglong

AU - Fu, Qiang

AU - Chen, Yu

AU - Yang, Liu

AU - Hu, Ziyang

AU - Chen, Yongsheng

AU - Liu, Yongsheng

PY - 2024/8/15

Y1 - 2024/8/15

N2 - Enhancing stability while maintaining high efficiency is among the primary challenges in the commercialization of perovskite solar cells (PSCs). Here, a crystal growth technique assisted by in situ generated 2D perovskite phases has been developed to construct high-quality 2D/3D perovskite films. The in situ generated 2D perovskite serve as templates for regulating the nucleation and oriented crystal growth in the α-FAPbI3-rich film. This led to a high film quality with much reduced trap density and an ultralong carrier lifetime. The obtained perovskite film shows excellent stability under extreme environment conditions (T = 200 °C, RH = 75 ± 5%). The corresponding PSC achieved an efficiency of 26.16% (certified 25.84%), along with excellent operational stability (T93 > 1300 h, T ≅ 50 °C) as well as outstanding high and low temperature cycle stability. © 2024 Wiley-VCH GmbH.

AB - Enhancing stability while maintaining high efficiency is among the primary challenges in the commercialization of perovskite solar cells (PSCs). Here, a crystal growth technique assisted by in situ generated 2D perovskite phases has been developed to construct high-quality 2D/3D perovskite films. The in situ generated 2D perovskite serve as templates for regulating the nucleation and oriented crystal growth in the α-FAPbI3-rich film. This led to a high film quality with much reduced trap density and an ultralong carrier lifetime. The obtained perovskite film shows excellent stability under extreme environment conditions (T = 200 °C, RH = 75 ± 5%). The corresponding PSC achieved an efficiency of 26.16% (certified 25.84%), along with excellent operational stability (T93 > 1300 h, T ≅ 50 °C) as well as outstanding high and low temperature cycle stability. © 2024 Wiley-VCH GmbH.

KW - 2D perovskite

KW - crystal orientation

KW - morphology

KW - perovskite solar cells

KW - stability

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UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-85197155698&origin=recordpage

U2 - 10.1002/adma.202405921

DO - 10.1002/adma.202405921

M3 - RGC 21 - Publication in refereed journal

SN - 0935-9648

VL - 36

JO - Advanced Materials

JF - Advanced Materials

IS - 33

M1 - 2405921

ER -

Controlled Nucleation and Oriented Crystallization of Methylammonium-Free Perovskites via In Situ Generated 2D Perovskite Phases

Abstract

Research Keywords

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