Aqueous solvent-regulated crystallization and interfacial modification in perovskite solar cells with enhanced stability and performance

Kejun LIAO; Lisha XIE; Yuying CUI; Shurong WANG; Chengbo LI; Aili WANG; Xiaoyu DENG; Yong XIANG; Liming DING; Feng HAO

doi:10.1016/j.jpowsour.2020.228447

Aqueous solvent-regulated crystallization and interfacial modification in perovskite solar cells with enhanced stability and performance

Kejun LIAO, Lisha XIE, Yuying CUI, Shurong WANG, Chengbo LI, Aili WANG, Xiaoyu DENG, Yong XIANG, Liming DING^*, Feng HAO^*

^*Corresponding author for this work

Research output: Journal Publications › Journal Article (refereed) › peer-review

13 Citations (Scopus)

Abstract

Crystal orientation of perovskite film and interface modification plays an important role in the efficient operation and stability of perovskite solar cells (PSC). Herein, a high quality perovskite film with large grain size, high crystallinity and preferred crystal orientation on (100) plane is deposited on an aqueous solvent (H₂O and DMF) pretreated nickel oxide (NiO_x) substrate (HDP). The aqueous solvent treatment increases the wettability and conductivity of NiO_x layer during perovskite growth. Steady-state and time-resolved photoluminescences reveals a significantly increased charge extraction efficiency in the HDP perovskite films. In addition, the HDP devices exhibit impressively improved photovoltaic performance as well as enhanced long-term stability under high moisture, UV irradiation and thermal stress. Therefore, our work provides a versatile strategy to introduce preferred orientation and interfacial modification to enhance the crystal quality and stability of halide perovskite thin films and related optoelectronic devices.

Original language	English
Article number	228447
Number of pages	8
Journal	Journal of Power Sources
Volume	471
Early online date	1 Jul 2020
DOIs	https://doi.org/10.1016/j.jpowsour.2020.228447
Publication status	Published - 30 Sept 2020
Externally published	Yes

Bibliographical note

This work was financially supported by the National Natural Science Foundation of China NSFC (51702038) and the Recruitment Program for Young Professionals. L. Ding thanks the National Key Research and Development Program of China (2017YFA0206600) and the National Natural Science Foundation of China (51773045, 21772030, 51922032, 21961160720) for financial support.

Keywords

Charge extraction
Defect passivation
HO
NiO
Orientation
Stability

UN SDGs

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

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10.1016/j.jpowsour.2020.228447

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title = "Aqueous solvent-regulated crystallization and interfacial modification in perovskite solar cells with enhanced stability and performance",

abstract = "Crystal orientation of perovskite film and interface modification plays an important role in the efficient operation and stability of perovskite solar cells (PSC). Herein, a high quality perovskite film with large grain size, high crystallinity and preferred crystal orientation on (100) plane is deposited on an aqueous solvent (H2O and DMF) pretreated nickel oxide (NiOx) substrate (HDP). The aqueous solvent treatment increases the wettability and conductivity of NiOx layer during perovskite growth. Steady-state and time-resolved photoluminescences reveals a significantly increased charge extraction efficiency in the HDP perovskite films. In addition, the HDP devices exhibit impressively improved photovoltaic performance as well as enhanced long-term stability under high moisture, UV irradiation and thermal stress. Therefore, our work provides a versatile strategy to introduce preferred orientation and interfacial modification to enhance the crystal quality and stability of halide perovskite thin films and related optoelectronic devices.",

keywords = "Charge extraction, Defect passivation, HO, NiO, Orientation, Stability",

author = "Kejun LIAO and Lisha XIE and Yuying CUI and Shurong WANG and Chengbo LI and Aili WANG and Xiaoyu DENG and Yong XIANG and Liming DING and Feng HAO",

note = "This work was financially supported by the National Natural Science Foundation of China NSFC (51702038) and the Recruitment Program for Young Professionals. L. Ding thanks the National Key Research and Development Program of China (2017YFA0206600) and the National Natural Science Foundation of China (51773045, 21772030, 51922032, 21961160720) for financial support.",

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month = sep,

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doi = "10.1016/j.jpowsour.2020.228447",

language = "English",

volume = "471",

journal = "Journal of Power Sources",

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TY - JOUR

T1 - Aqueous solvent-regulated crystallization and interfacial modification in perovskite solar cells with enhanced stability and performance

AU - LIAO, Kejun

AU - XIE, Lisha

AU - CUI, Yuying

AU - WANG, Shurong

AU - LI, Chengbo

AU - WANG, Aili

AU - DENG, Xiaoyu

AU - XIANG, Yong

AU - DING, Liming

AU - HAO, Feng

N1 - This work was financially supported by the National Natural Science Foundation of China NSFC (51702038) and the Recruitment Program for Young Professionals. L. Ding thanks the National Key Research and Development Program of China (2017YFA0206600) and the National Natural Science Foundation of China (51773045, 21772030, 51922032, 21961160720) for financial support.

PY - 2020/9/30

Y1 - 2020/9/30

N2 - Crystal orientation of perovskite film and interface modification plays an important role in the efficient operation and stability of perovskite solar cells (PSC). Herein, a high quality perovskite film with large grain size, high crystallinity and preferred crystal orientation on (100) plane is deposited on an aqueous solvent (H2O and DMF) pretreated nickel oxide (NiOx) substrate (HDP). The aqueous solvent treatment increases the wettability and conductivity of NiOx layer during perovskite growth. Steady-state and time-resolved photoluminescences reveals a significantly increased charge extraction efficiency in the HDP perovskite films. In addition, the HDP devices exhibit impressively improved photovoltaic performance as well as enhanced long-term stability under high moisture, UV irradiation and thermal stress. Therefore, our work provides a versatile strategy to introduce preferred orientation and interfacial modification to enhance the crystal quality and stability of halide perovskite thin films and related optoelectronic devices.

AB - Crystal orientation of perovskite film and interface modification plays an important role in the efficient operation and stability of perovskite solar cells (PSC). Herein, a high quality perovskite film with large grain size, high crystallinity and preferred crystal orientation on (100) plane is deposited on an aqueous solvent (H2O and DMF) pretreated nickel oxide (NiOx) substrate (HDP). The aqueous solvent treatment increases the wettability and conductivity of NiOx layer during perovskite growth. Steady-state and time-resolved photoluminescences reveals a significantly increased charge extraction efficiency in the HDP perovskite films. In addition, the HDP devices exhibit impressively improved photovoltaic performance as well as enhanced long-term stability under high moisture, UV irradiation and thermal stress. Therefore, our work provides a versatile strategy to introduce preferred orientation and interfacial modification to enhance the crystal quality and stability of halide perovskite thin films and related optoelectronic devices.

KW - Charge extraction

KW - Defect passivation

KW - HO

KW - NiO

KW - Orientation

KW - Stability

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U2 - 10.1016/j.jpowsour.2020.228447

DO - 10.1016/j.jpowsour.2020.228447

M3 - Journal Article (refereed)

AN - SCOPUS:85087112818

SN - 0378-7753

VL - 471

JO - Journal of Power Sources

JF - Journal of Power Sources

M1 - 228447

ER -

Aqueous solvent-regulated crystallization and interfacial modification in perovskite solar cells with enhanced stability and performance

Abstract

Bibliographical note

Keywords

UN SDGs

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