Inorganic perovskite cesium lead halide is extensively studied because of its potential in improving the thermal stability of perovskite materials. However, the tolerance factor of this type of perovskite is near the ...Inorganic perovskite cesium lead halide is extensively studied because of its potential in improving the thermal stability of perovskite materials. However, the tolerance factor of this type of perovskite is near the critical value, which leads to phase instability. The optoelectronic active black phases(α,β, and γ phases of CsPbI3) are metastable at room temperature, which can be easily transferred into an optoelectronic inactive yellow phase(δ-CsPbI3). This review highlights recent progress in stabilizing the black phase for efficient and stable perovskite solar cells.展开更多
Cesium-based inorganic perovskite solar cells(PSCs)are paid more attention because of their potential thermal stability.However,prevalent salt-doped 2,2',7,7'-tetrakis(N,N-dipmethoxyphenylamine)9,9z-spirobiflu...Cesium-based inorganic perovskite solar cells(PSCs)are paid more attention because of their potential thermal stability.However,prevalent salt-doped 2,2',7,7'-tetrakis(N,N-dipmethoxyphenylamine)9,9z-spirobifluorene(Spiro-OMeTAD)as hole-transport materials(HTMs)for a high-efficiency inorganic device has an unfortunate defective thermal stability.In this study,we apply poly(3-hexylthiophene-2,5-diyl)(P3HT)as the HTM and design all-inorganic PSCs with an indium tin oxide(ITO)/SnO2/LiF/CsPbI3-xBrx/P3HT/Au structure.As a result,the CsPbb-xBrx PSCs achieve an excellent performance of 15.84%.The P3HT HTM-based device exhibits good photo-stability,maintaining〜80%of their initial power conversion efficiency over 280 h under one Sun irradiation.In addition,they also show better thermal stability compared with the traditional HTM Spiro-OMeTAD.展开更多
基金supported by the National Key Research and Development Program of China (2016YFB0700700, 2017YFA0206600)Beijing Municipal Science & Technology Commission (Z181100004718005, Z181100005118002)+1 种基金the National Natural Science Foundation of China (61574133, 61634001)the National 1000 Young Talents Awards
文摘Inorganic perovskite cesium lead halide is extensively studied because of its potential in improving the thermal stability of perovskite materials. However, the tolerance factor of this type of perovskite is near the critical value, which leads to phase instability. The optoelectronic active black phases(α,β, and γ phases of CsPbI3) are metastable at room temperature, which can be easily transferred into an optoelectronic inactive yellow phase(δ-CsPbI3). This review highlights recent progress in stabilizing the black phase for efficient and stable perovskite solar cells.
基金supported by the Beijing Municipal Science and Technology Commission(Nos.Z181100004718005 and Z181100005118002).
文摘Cesium-based inorganic perovskite solar cells(PSCs)are paid more attention because of their potential thermal stability.However,prevalent salt-doped 2,2',7,7'-tetrakis(N,N-dipmethoxyphenylamine)9,9z-spirobifluorene(Spiro-OMeTAD)as hole-transport materials(HTMs)for a high-efficiency inorganic device has an unfortunate defective thermal stability.In this study,we apply poly(3-hexylthiophene-2,5-diyl)(P3HT)as the HTM and design all-inorganic PSCs with an indium tin oxide(ITO)/SnO2/LiF/CsPbI3-xBrx/P3HT/Au structure.As a result,the CsPbb-xBrx PSCs achieve an excellent performance of 15.84%.The P3HT HTM-based device exhibits good photo-stability,maintaining〜80%of their initial power conversion efficiency over 280 h under one Sun irradiation.In addition,they also show better thermal stability compared with the traditional HTM Spiro-OMeTAD.
