THIN FILM MATERIALS AND DEVICES FOR SOLAR ENERGY HARVESTING

Abstract

Organic-inorganic perovskite materials (OIHPs) have attracted tremendous interest for solar cell application due their unexampled optoelectronic properties. The perovskite solar cells (PVSCs) based on using the inverted planar architecture could be fabricated with low-energy and short-time input, suitable for future commercialization and compatible with the tandem or flexible application. However, the efficiency of the PVSCs using such architecture far lags behind than that of the or mesoporous devices. In this study, we propose a series of strategies to improve the efficiency approaching 21% for the inverted planar PVSCs with enhanced shelf stability. Various optical, electrical, microscopy and surface characterizations and DFT calculations were used to understand the underlying mechanism. Except for using the lead-based perovskite, we also explore the new lead-free, non-toxic and stable OIHP for the potential application. We believe that our performed research works could benefit the deep understand and contribute to the development of OIHPs and PVSCs.