The development of organometal halide perovskite solar cells has grown rapidly and the highest efficiency of the devices has recently surpassed 22%. Because these solar cells contain toxic lead, a sustainable strategy is required to prevent environmental pollution and avoid healthy hazard caused by possible lead outflow. Here, in situ recycling PbI 2 from thermal decomposition CH 3 NH 3 PbI 3 perovskite films for efficient perovskite solar cells was developed. The thermal behavior of CH 3 NH 3 PbI 3 perovskite and its individual components were examined by thermogravimetric analysis. By optimizing the process of thermal decomposition CH 3 NH 3 PbI 3 film, the complete conversion from CH 3 NH 3 PbI 3 to pure PbI 2 layer with a mesoporous scaffold was achieved. The mesoporous structure readily promotes the conversion efficiency of perovskite and consequently results in high‐performance device. A perovskite crystal growth mechanism on the mesoporous PbI 2 structure was proposed. These results suggest that in situ recycled PbI 2 scaffolds can be a new route in manipulating the morphology of the perovskite active layer, providing new possibilities for high performance. Meanwhile, the risk of lead outflow can be released, and the saving‐energy fabrication of efficient solar cells can be realized. This is a manuscript by Jie Xu, Ziyang Hu*, Like Huang, Xiaokun Huang, Xianyu Jia, Jing Zhang, Jianjun Zhang, and Yuejin Zhu and titled “In Situ Recycle of PbI 2 as a Step Towards Sustainable Perovskite Solar Cells.” In this paper, high‐efficiency perovskite solar cells using in situ recycling PbI 2 from thermal decomposition perovskite were developed, demonstrating a process to address the environmental and health issues of lead‐based perovskite cells, which offers a step towards sustainable solar technology.


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    Titel :

    In situ recycle of PbI2 as a step towards sustainable perovskite solar cells



    Erschienen in:

    Erscheinungsdatum :

    2017




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Englisch



    Klassifikation :

    BKL:    53.36 Energiedirektumwandler, elektrische Energiespeicher