Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 140, Issue 11, Pages 3825-3828Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jacs.7b13229
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Funding
- National Natural Science Foundation of China [51672111]
- Advanced Talents Program of Hebei Province [GCC2014013]
- Research project of scientific research cultivation and innovation fund of Jinan University [21617341]
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All-inorganic perovskite solar cells provide a promising solution to tackle the thermal instability problem of organic inorganic perovskite solar cells (PSCs). Herein, we designed an all-inorganic perovskite solar cell with novel structure (FTO/NiOx/CsPbI2Br/ZnO@C-60/Ag), in which ZnO@C-60 bilayer was utilized as the electron-transporting layers that demonstrated high carrier extraction efficiency and low leakage loss. Consequently, the as-fabricated all-inorganic CsPbI2Br perovskite solar cell yielded a power conversion efficiency (PCE) as high as 13.3% with a V-oc of 1.14 V, J(sc) of 15.2 mA.cm(-2), and FF of 0.77. The corresponding stabilized power output (SPO) of the device was demonstrated to be similar to 12% and remarkably stable within 1000 s. Importantly, the obtained all-inorganic PSCs without encapsulation exhibited only 20% PCE loss with thermal treatment at 85 degrees C for 360 h, which largely outperformed the organic species-containing PSCs. The present study demonstrates potential in overcoming the intractable issue concerning the thermal instability of perovskite solar cells.
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