%0 Journal Article %1 li2018photocharge %A Li, Yusheng %A Li, Yiming %A Shi, Jiangjian %A Li, Hongshi %A Zhang, Huiyin %A Wu, Jionghua %A Li, Dongmei %A Luo, Yanhong %A Wu, Huijue %A Meng, Qingbo %D 2018 %I AIP Publishing %J Applied Physics Letters %K TPC TPV charge degradation interface perovskite recombination %N 5 %P 053904 %R 10.1063/1.5009040 %T Photocharge accumulation and recombination in perovskite solar cells regarding device performance and stability %U https://aip.scitation.org/doi/10.1063/1.5009040 %V 112 %X Photocharge accumulation and recombination in perovskite solar cells have been systematically investigated in this paper by electrochemical spectroscopy and transient photocurrent/photovoltage methods. It is found that the non-equilibrium photocharges stored in the selective charge transport layers follow a backward recombination mechanism. That is, the photocharges are first captured by the interface defects corresponding to the fast photovoltage decay, while the bulk charge recombination instead of the diffusion process dominates the slow photovoltage decay process. Further investigation reveals that the device degradation preferentially takes place at the interface under working conditions, which thus can confirm the importance of interface engineering to enhance the device stability.

@article{li2018photocharge, abstract = {Photocharge accumulation and recombination in perovskite solar cells have been systematically investigated in this paper by electrochemical spectroscopy and transient photocurrent/photovoltage methods. It is found that the non-equilibrium photocharges stored in the selective charge transport layers follow a backward recombination mechanism. That is, the photocharges are first captured by the interface defects corresponding to the fast photovoltage decay, while the bulk charge recombination instead of the diffusion process dominates the slow photovoltage decay process. Further investigation reveals that the device degradation preferentially takes place at the interface under working conditions, which thus can confirm the importance of interface engineering to enhance the device stability.}, added-at = {2018-04-18T17:02:16.000+0200}, author = {Li, Yusheng and Li, Yiming and Shi, Jiangjian and Li, Hongshi and Zhang, Huiyin and Wu, Jionghua and Li, Dongmei and Luo, Yanhong and Wu, Huijue and Meng, Qingbo}, biburl = {https://www.bibsonomy.org/bibtex/210da65149d56e721905536a0503cc37a/masal}, doi = {10.1063/1.5009040}, interhash = {6861132ecab58b9fdfe2e00be39a5320}, intrahash = {10da65149d56e721905536a0503cc37a}, journal = {Applied Physics Letters}, keywords = {TPC TPV charge degradation interface perovskite recombination}, number = 5, pages = 053904, publisher = {AIP Publishing}, timestamp = {2018-04-18T17:02:16.000+0200}, title = {Photocharge accumulation and recombination in perovskite solar cells regarding device performance and stability}, url = {https://aip.scitation.org/doi/10.1063/1.5009040}, volume = 112, year = 2018 }