CSIR – National Institute for Interdisciplinary Science and Technology (NIIST)

Council of Scientific & Industrial Research (CSIR), Govt.Of India Thiruvananthapuram.

Organic – Inorganic Hybrid Perovskites: The Next Logical Step in Solar Cell Research

 

Dr. C. Vijayakumar on 9th June 2014 at 2:30 pm

Abstract: Organometal halide perovskite-based solar cells have recently emerged as a transformative photovoltaic (PV) technology. It possesses the advantages of both organic (solution processability and less expensive) and inorganic (excellent power conversion efficiency and high stability) counterparts. Power conversion efficiency attained with the hybrid organic ? inorganic perovskite CH3NH3PbI3 has now exceeded 15%, making it competitive with thin-film PV technology. The most attractive aspects of this technology are the simplicity of photoactive layer synthesis and application using bench top approaches at temperatures less than 100 °C. An important and useful feature of these organometal halide perovskite solar cells is the relatively high open-circuit voltage (VOC ? 1 V). New strategies are now being explored to boost the open-circuit voltage even higher using CH3NH3PbBr3. For example, inclusion of chloride ions in CH3NH3PbBr3 films yields VOC as high as 1.5 V.