Details

Autor(en) / Beteiligte

• Zhou, Junshuai
• Wu, Jiaojiao
• Li, Nan
• Li, Xitao
• Zheng, Yan-Zhen
• Tao, Xia

Titel

Efficient all-air processed mixed cation carbon-based perovskite solar cells with ultra-high stability

Ist Teil von

• Journal of materials chemistry. A, Materials for energy and sustainability, 2019, Vol.7 (29), p.17594-1763

Ort / Verlag

Cambridge: Royal Society of Chemistry

Erscheinungsjahr

2019

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Methylammonium lead iodide (MAPbI 3 ) perovskite commonly used in hole-transport material (HTM)-free carbon-based perovskite solar cells (C-PSCs) is unstable in ambient conditions, and its glove box preparation process is essential but incompatible with the low-cost mass-production of C-PSCs. Although mixed cation/halide type perovskites are more durable against exposure to heat and moisture compared with a single cation MAPbI 3 perovskite, the air-processed fabrication of stable mixed perovskite films out of the glove box has yet to be achieved in C-PSCs. We herein fabricate a multi-walled carbon nanotube (MWCNT)-incorporated FA x MA 1− x PbI y Br 3− y perovskite film in ambient air, in which hydrophobic MWCNTs are firstly introduced into the mixed perovskite matrix to mediate the crystallization of FA x MA 1− x PbI y Br 3− y and prevent the erosion by moisture of the perovskite layer. Based on the as-prepared MWCNT-incorporated FA x MA 1− x PbI y Br 3− y , the whole C-PSCs with the structure of ITO/SnO 2 /perovskite/C are constructed under actual ambient air conditions with low annealing temperature <150 °C, achieving outstanding power conversion efficiencies of 16.25% (0.08 cm 2 ) and 12.34% (1 cm 2 ). Particularly, the all-air-processed mixed cation C-PSCs maintain a long-term stability of 93% under ambient air conditions for 22 weeks, exhibiting the best ambient-air stability of PSCs fabricated in air so far. This study provides a feasible route for the commercialization development of low-cost, stable and efficient PSCs. The all-air-processed MWCNT-incorporated mixed cation carbon-based perovskite solar cells achieve an outstanding PCE of 16.25% and the best ambient-air stability of PSCs fabricated in air so far.