%0 Journal Article %1 doi:10.1021/acsenergylett.7b00508 %A Hu, Yanqiang %A Bai, Fan %A Liu, Xinbang %A Ji, Qingmin %A Miao, Xiaoliang %A Qiu, Ting %A Zhang, Shufang %D 2017 %J ACS Energy Letters %K bismuth inorganoc perovskite %N 10 %P 2219-2227 %R 10.1021/acsenergylett.7b00508 %T Bismuth Incorporation Stabilized α-CsPbI3 for Fully Inorganic Perovskite Solar Cells %U http://dx.doi.org/10.1021/acsenergylett.7b00508 %V 2 %X All-inorganic CsPbI3 perovskite is emerging to be an alternative light-harvesting material in solar cells owing to the enhanced stability and comparable photovoltaic performance compared to organic–inorganic hybrid perovskites. However, the desirable black phase α-CsPbI3 is not stable at room temperature and degrades rapidly to a nonperovskite yellow phase δ-CsPbI3. Herein, we introduce a compositional engineering approach via incorporating Bi3+ in CsPbI3 to stabilize the α-phase at room temperature. Fully inorganic solar cells based on the Bi-incorporated α-CsPb1–xBixI3 compounds demonstrate a high PCE of 13.21\% at an optimal condition (incorporation of 4 mol \% Bi3+) and maintain 68\% of the initial PCE for 168 h under ambient conditions without encapsulation. This is the first attempt of partial substitution of the “B”-site of the perovskite to stabilize the α-CsPbI3, which paves the way for further developments of such perovskites and other optoelectronic devices.

@article{doi:10.1021/acsenergylett.7b00508, abstract = { All-inorganic CsPbI3 perovskite is emerging to be an alternative light-harvesting material in solar cells owing to the enhanced stability and comparable photovoltaic performance compared to organic–inorganic hybrid perovskites. However, the desirable black phase α-CsPbI3 is not stable at room temperature and degrades rapidly to a nonperovskite yellow phase δ-CsPbI3. Herein, we introduce a compositional engineering approach via incorporating Bi3+ in CsPbI3 to stabilize the α-phase at room temperature. Fully inorganic solar cells based on the Bi-incorporated α-CsPb1–xBixI3 compounds demonstrate a high PCE of 13.21\% at an optimal condition (incorporation of 4 mol \% Bi3+) and maintain 68\% of the initial PCE for 168 h under ambient conditions without encapsulation. This is the first attempt of partial substitution of the “B”-site of the perovskite to stabilize the α-CsPbI3, which paves the way for further developments of such perovskites and other optoelectronic devices. }, added-at = {2017-10-13T12:50:02.000+0200}, author = {Hu, Yanqiang and Bai, Fan and Liu, Xinbang and Ji, Qingmin and Miao, Xiaoliang and Qiu, Ting and Zhang, Shufang}, biburl = {https://www.bibsonomy.org/bibtex/2a4b5dcd28fd138676dc78138f77f720f/fabianopkm}, description = {Bismuth Incorporation Stabilized α-CsPbI3 for Fully Inorganic Perovskite Solar Cells - ACS Energy Letters (ACS Publications)}, doi = {10.1021/acsenergylett.7b00508}, eprint = {http://dx.doi.org/10.1021/acsenergylett.7b00508}, interhash = {00c69934e891a1d25556e66d8d24475f}, intrahash = {a4b5dcd28fd138676dc78138f77f720f}, journal = {ACS Energy Letters}, keywords = {bismuth inorganoc perovskite}, number = 10, pages = {2219-2227}, timestamp = {2017-10-13T12:50:02.000+0200}, title = {Bismuth Incorporation Stabilized α-CsPbI3 for Fully Inorganic Perovskite Solar Cells}, url = {http://dx.doi.org/10.1021/acsenergylett.7b00508}, volume = 2, year = 2017 }