TY - JOUR
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
N1 - Publisher Copyright:
© The Royal Society of Chemistry 2021.
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.
UR - http://www.scopus.com/inward/record.url?scp=85108442294&partnerID=8YFLogxK
U2 - 10.1039/d0ta12286f
DO - 10.1039/d0ta12286f
M3 - Journal Article (refereed)
AN - SCOPUS:85108442294
SN - 2050-7488
VL - 9
SP - 19778
EP - 19787
JO - Journal of Materials Chemistry A
JF - Journal of Materials Chemistry A
IS - 35
ER -
