研究目的
To explore spinel Co3O4 based p-type conductive oxides as hole transport materials in organometallic halide MAPbI3 and (FASnI3)0.6(MAPbI3)0.4 perovskite solar cells and examine their structural, crystalline, optical, electrical, photoelectrochemical, and surface chemistry properties.
研究成果
The study concludes that spinel Co3O4 based p-type conductive oxides, especially when doped with lithium, can serve as efficient hole transport materials in perovskite solar cells, achieving significant power conversion efficiencies. However, further optimization is needed to improve device fill factors, minimize voltage deficits, and reduce J-V scan hysteresis, particularly for low bandgap Sn-rich perovskites.
研究不足
The study is limited by the chemical solution method used for preparing cobaltite spinel films, which requires post heat treatments at high temperatures. This can cause conductivity losses of ITO substrates and may limit the application of these materials in perovskite single-junction and tandem solar cells due to potential damage to the underlying subcells.
