TY - JOUR
T1 - Perovskite/CIGS Tandem Solar Cells with over 1000 h Operational Stability through Interconnection Stress Relief
AU - Pei, Fengtao
AU - Lin, Shuping
AU - Tang, Jiahong
AU - Huang, Xingye
AU - Han, Yu
AU - Sun, Qi
AU - Lin, Shiju
AU - Wang, Hao
AU - Zhang, Zhongyang
AU - Zhuang, Xinmeng
AU - Li, Kailin
AU - Zhu, Cheng
AU - Chen, Yihua
AU - Song, Tinglu
AU - Cheng, Teng
AU - Cui, Yuanyuan
AU - Zhang, Ying
AU - Hou, Huiqing
AU - Zhou, Wentao
AU - Lin, Yuze
AU - Li, Boyan
AU - Hong, Shaoxin
AU - Zhou, Huanping
AU - Wang, Xueyun
AU - Zhou, Yuanyuan
AU - Zhong, Dalong
AU - Chen, Qi
AU - Jiang, Yan
N1 - Publisher Copyright:
© 2025 American Chemical Society
PY - 2025/10/8
Y1 - 2025/10/8
N2 - Perovskite/CIGS thin-film tandem solar cells offer a promising solution for lightweight and cost-effective photovoltaic technologies. However, their practical deployment is hindered by unsatisfied long-term operational stability. In this study, we identify perovskite films deposited on smoothed CIGS substrates exhibit tensile stress, which weakens bonding interactions, induces chemical structural instability, lowers defect formation energy and ion migration activation energy, impeding long-term operation of tandem devices under photothermal stress. Rough CIGS substrates featured with corrugated surface morphology effectively alleviating harmful tensile stresses. As a result, photothermal tolerance and optoelectronic properties are enhanced in corresponding perovskite films. The monolithic perovskite/CIGS tandem devices achieve a certified stabilized efficiency exceeding 28%, along with a notably extended T80lifetime of 1123 h under maximum power point tracking with full-spectrum AM 1.5G illumination. Additionally, these devices demonstrate enhanced operational stability at an elevated temperature of 60 °C and under thermal cycling tests (from room temperature to 65 °C) in a N2-filled glovebox. This work underscores the essential role of interconnection contact engineering in enhancing the long-term stability of perovskite-based devices.
AB - Perovskite/CIGS thin-film tandem solar cells offer a promising solution for lightweight and cost-effective photovoltaic technologies. However, their practical deployment is hindered by unsatisfied long-term operational stability. In this study, we identify perovskite films deposited on smoothed CIGS substrates exhibit tensile stress, which weakens bonding interactions, induces chemical structural instability, lowers defect formation energy and ion migration activation energy, impeding long-term operation of tandem devices under photothermal stress. Rough CIGS substrates featured with corrugated surface morphology effectively alleviating harmful tensile stresses. As a result, photothermal tolerance and optoelectronic properties are enhanced in corresponding perovskite films. The monolithic perovskite/CIGS tandem devices achieve a certified stabilized efficiency exceeding 28%, along with a notably extended T80lifetime of 1123 h under maximum power point tracking with full-spectrum AM 1.5G illumination. Additionally, these devices demonstrate enhanced operational stability at an elevated temperature of 60 °C and under thermal cycling tests (from room temperature to 65 °C) in a N2-filled glovebox. This work underscores the essential role of interconnection contact engineering in enhancing the long-term stability of perovskite-based devices.
UR - http://www.scopus.com/pages/publications/105018004722
U2 - 10.1021/jacs.5c13264
DO - 10.1021/jacs.5c13264
M3 - Article
C2 - 40974588
AN - SCOPUS:105018004722
SN - 0002-7863
VL - 147
SP - 36815
EP - 36824
JO - Journal of the American Chemical Society
JF - Journal of the American Chemical Society
IS - 40
ER -