Study of Enhanced hole extraction by CuInxGa(1-x)S2 nanoparticles with carbon electrodes
Paper ID : 1567-ICNS
Mozhdeh Forouzandeh *1, Fatemeh Behrouznejad2, Nima Taghavinia3, Roohallah Khosroshahi4
1Department department of basic sciences, Tarbiat Modares University, Tehran, 175-14115, Iran
2Center of Micro-Nano System, SIST, Fudan University, Shanghai, China
3Department of Physics, Sharif university of technology, Tehran, Iran
4Institute for Nanoscience and Nanotechnology, Sharif University of Technology, Tehran, Iran
Carbon material due to excellent thermal stability and low cost is applied as the back electrode for perovskite solar cells. In spite of their excellent and attractive factors, charge recombination at the perovskite/carbon interface is a serious problem of the poor performance of carbon electrode based HTL-free perovskite solar cells. So replacing the Au electrode is not enough to have an efficient device. In this work, both CuInxGa(1-x)S2 nanoparticles as a hole transport material and carbon electrode are used to improve the extraction of photogenerated carriers and inhibit the charge recombination at the perovskite layer/carbon electrode interface. Effects of x=In/In+Ga value on the power conversion efficiency (PCE) and photovoltaic properties of carbon electrode based perovskite solar cell are investigated. Results proves applying CuInxGa(1-x)S2 nanoparticles between the perovskite film and the carbon electrode efficiently improve the hole extraction and the performance of the device and the best efficiency of 13.57% obtained for x=1.
perovskite solar cell; carbon electrode; inorganic hole transport layer
Status : Abstract Accepted (Oral Presentation)