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Effects of Annealing Conditions on Mixed Lead Halide Perovskite Solar Cells and Their Thermal Stability Investigation.

ABSTRACT: In this work, efficient mixed organic cation and mixed halide (MA0.7FA0.3Pb(I0.9Br0.1)?) perovskite solar cells are demonstrated by optimizing annealing conditions. AFM, XRD and PL measurements show that there is a better perovskite film quality for the annealing condition at 100 °C for 30 min. The corresponding device exhibits an optimized PCE of 16.76% with VOC of 1.02 V, JSC of 21.55 mA/cm² and FF of 76.27%. More importantly, the mixed lead halide perovskite MA0.7FA0.3Pb(I0.9Br0.1)? can significantly increase the thermal stability of perovskite film. After being heated at 80 °C for 24 h, the PCE of the MA0.7FA0.3Pb(I0.9Br0.1)? device still remains at 70.00% of its initial value, which is much better than the control MAPbI? device, where only 46.50% of its initial value could be preserved. We also successfully fabricated high-performance flexible mixed lead halide perovskite solar cells based on PEN substrates.

SUBMITTER: Yang H 

PROVIDER: S-EPMC5551880 | biostudies-other | 2017 Jul

REPOSITORIES: biostudies-other

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Effects of Annealing Conditions on Mixed Lead Halide Perovskite Solar Cells and Their Thermal Stability Investigation.

Yang Haifeng H   Zhang Jincheng J   Zhang Chunfu C   Chang Jingjing J   Lin Zhenhua Z   Chen Dazheng D   Xi He H   Hao Yue Y  

Materials (Basel, Switzerland) 20170721 7

In this work, efficient mixed organic cation and mixed halide (MA<sub>0.7</sub>FA<sub>0.3</sub>Pb(I<sub>0.9</sub>Br<sub>0.1</sub>)₃) perovskite solar cells are demonstrated by optimizing annealing conditions. AFM, XRD and PL measurements show that there is a better perovskite film quality for the annealing condition at 100 °C for 30 min. The corresponding device exhibits an optimized PCE of 16.76% with <i>V</i><sub>OC</sub> of 1.02 V, <i>J</i><sub>SC</sub> of 21.55 mA/cm² and FF of 76.27%. More  ...[more]

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