Improved stability and efficiency of perovskite/organic tandem solar cells with an all-inorganic perovskite layer

Xin WU; Yizhe LIU; Feng QI; Francis LIN; Huiting FU; Kui JIANG; Shengfan WU; Leyu BI; Deng WANG; Fang XU; Alex K.Y. JEN; Zonglong ZHU

doi:10.1039/d0ta12286f

Improved stability and efficiency of perovskite/organic tandem solar cells with an all-inorganic perovskite layer

Xin WU, Yizhe LIU, Feng QI, Francis LIN, Huiting FU, Kui JIANG, Shengfan WU, Leyu BI, Deng WANG, Fang XU, Alex K.Y. JEN, Zonglong ZHU^*

^*Corresponding author for this work

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

67 Citations (Scopus)

Abstract

All-inorganic perovskite solar cells (PVSCs) have attracted intensive attention owing to their tunable bandgaps and excellent photo- and thermostability, making them promising absorbers in tandem solar cells (TSCs). Herein, we develop an all-inorganic perovskite/organic TSC with a wide bandgap all-inorganic perovskite CsPbI_2.1Br_0.9and a narrow bandgap organic photoactive layer (PM6:Y6) serving as top and bottom sub cells respectively. The fabricated tandem solar cell demonstrated a remarkable PCE of 18.06%, with an open-circuit voltage (V_OC) of 1.89 V, short-circuit current (J_SC) of 12.77 mA cm⁻², and fill factor (FF) of 74.81%, which is higher than that of both single junction PVSCs (14.43%) and organic solar cells (14.01%). Moreover, benefiting from the outstanding UV and thermal stability of inorganic perovskites, all-inorganic perovskite-based tandem devices showed superior stability under light and heat, with negligible degradation after 150 h of UV irradiation, 250 h under one sun illumination and 100 h of heating at 80 °C. This work demonstrates that all-inorganic perovskites are an appropriate candidate for the fabrication of efficient and stable TSCs.

Original language	English
Pages (from-to)	19778-19787
Number of pages	10
Journal	Journal of Materials Chemistry A
Volume	9
Issue number	35
Early online date	18 Mar 2021
DOIs	https://doi.org/10.1039/d0ta12286f
Publication status	Published - 21 Sept 2021
Externally published	Yes

Bibliographical note

Publisher Copyright:
© The Royal Society of Chemistry 2021.

Funding

This work was supported by the APRC Grant of the City University of Hong Kong (9610421), Innovation and Technology Fund (ITS/497/18FP, GHP/021/18SZ), the Office of Naval Research (N00014-17-1-2201), National Science Foundation (DMR-1608279), the Air Force Office of Scientic Research (FA9550-18-1-0046), the ECS grant (CityU 21301319) from the Research Grants Council of Hong Kong, Natural Science Foundation of Guangdong Province (2019A1515010761), Guangdong Major Project of Basic and Applied Basic Research (No. 2019B030302007), Guangdong-Hong Kong-Macao Joint Laboratory of Optoelectronic and Magnetic Functional Materials (No. 2019B121205002), the National Natural Science Foundation of China (No. 62001308), and Research Grants for Universities in Guangdong Province through Innovative Project for Young Talents (No. 2018KQNCX398).

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Cite this

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title = "Improved stability and efficiency of perovskite/organic tandem solar cells with an all-inorganic perovskite layer",

abstract = "All-inorganic perovskite solar cells (PVSCs) have attracted intensive attention owing to their tunable bandgaps and excellent photo- and thermostability, making them promising absorbers in tandem solar cells (TSCs). Herein, we develop an all-inorganic perovskite/organic TSC with a wide bandgap all-inorganic perovskite CsPbI2.1Br0.9and a narrow bandgap organic photoactive layer (PM6:Y6) serving as top and bottom sub cells respectively. The fabricated tandem solar cell demonstrated a remarkable PCE of 18.06%, with an open-circuit voltage (VOC) of 1.89 V, short-circuit current (JSC) of 12.77 mA cm−2, and fill factor (FF) of 74.81%, which is higher than that of both single junction PVSCs (14.43%) and organic solar cells (14.01%). Moreover, benefiting from the outstanding UV and thermal stability of inorganic perovskites, all-inorganic perovskite-based tandem devices showed superior stability under light and heat, with negligible degradation after 150 h of UV irradiation, 250 h under one sun illumination and 100 h of heating at 80 °C. This work demonstrates that all-inorganic perovskites are an appropriate candidate for the fabrication of efficient and stable TSCs.",

author = "Xin WU and Yizhe LIU and Feng QI and Francis LIN and Huiting FU and Kui JIANG and Shengfan WU and Leyu BI and Deng WANG and Fang XU and JEN, {Alex K.Y.} and Zonglong ZHU",

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T1 - Improved stability and efficiency of perovskite/organic tandem solar cells with an all-inorganic perovskite layer

AU - WU, Xin

AU - LIU, Yizhe

AU - QI, Feng

AU - LIN, Francis

AU - FU, Huiting

AU - JIANG, Kui

AU - WU, Shengfan

AU - BI, Leyu

AU - WANG, Deng

AU - XU, Fang

AU - JEN, Alex K.Y.

AU - ZHU, Zonglong

PY - 2021/9/21

Y1 - 2021/9/21

N2 - All-inorganic perovskite solar cells (PVSCs) have attracted intensive attention owing to their tunable bandgaps and excellent photo- and thermostability, making them promising absorbers in tandem solar cells (TSCs). Herein, we develop an all-inorganic perovskite/organic TSC with a wide bandgap all-inorganic perovskite CsPbI2.1Br0.9and a narrow bandgap organic photoactive layer (PM6:Y6) serving as top and bottom sub cells respectively. The fabricated tandem solar cell demonstrated a remarkable PCE of 18.06%, with an open-circuit voltage (VOC) of 1.89 V, short-circuit current (JSC) of 12.77 mA cm−2, and fill factor (FF) of 74.81%, which is higher than that of both single junction PVSCs (14.43%) and organic solar cells (14.01%). Moreover, benefiting from the outstanding UV and thermal stability of inorganic perovskites, all-inorganic perovskite-based tandem devices showed superior stability under light and heat, with negligible degradation after 150 h of UV irradiation, 250 h under one sun illumination and 100 h of heating at 80 °C. This work demonstrates that all-inorganic perovskites are an appropriate candidate for the fabrication of efficient and stable TSCs.

AB - All-inorganic perovskite solar cells (PVSCs) have attracted intensive attention owing to their tunable bandgaps and excellent photo- and thermostability, making them promising absorbers in tandem solar cells (TSCs). Herein, we develop an all-inorganic perovskite/organic TSC with a wide bandgap all-inorganic perovskite CsPbI2.1Br0.9and a narrow bandgap organic photoactive layer (PM6:Y6) serving as top and bottom sub cells respectively. The fabricated tandem solar cell demonstrated a remarkable PCE of 18.06%, with an open-circuit voltage (VOC) of 1.89 V, short-circuit current (JSC) of 12.77 mA cm−2, and fill factor (FF) of 74.81%, which is higher than that of both single junction PVSCs (14.43%) and organic solar cells (14.01%). Moreover, benefiting from the outstanding UV and thermal stability of inorganic perovskites, all-inorganic perovskite-based tandem devices showed superior stability under light and heat, with negligible degradation after 150 h of UV irradiation, 250 h under one sun illumination and 100 h of heating at 80 °C. This work demonstrates that all-inorganic perovskites are an appropriate candidate for the fabrication of efficient and stable TSCs.

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Improved stability and efficiency of perovskite/organic tandem solar cells with an all-inorganic perovskite layer

Abstract

Bibliographical note

Funding

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