Accelerated Optimization of TiO2/Sb2Se3 Thin Film Solar Cells by High-Throughput Combinatorial Approach

5 years ago

Accelerated Optimization of TiO2/Sb2Se3 Thin Film Solar Cells by High-Throughput Combinatorial Approach

Shuaicheng Lu, Dengbing Li, Hui Deng, Bo Yang, Wenhao Chen, Yang Li, Liang Wang, Fei Yi, Kanghua Li, Chao Chen, Jiang Tang, Yang Zhao

Sb2Se3, a V2-VI3 compound semiconductor, has attracted extensive research attention in photovoltaics due to its non-toxicity, low cost and earth-abundant constituents. Herein, a combinatorial approach to optimize the performance of TiO2/Sb2Se3 thin film photovoltaics is employed. By simultaneously conducting a series of experiments in parallel rather than one after another, combinatorial strategy increases experimental throughput and reduces personnel costs. Key parameters such as TiO2 thickness, post-annealing temperature and Sb2Se3 thickness are identified as 65 nm, 450 °C and 850 nm through the combinatorial approach. Finally, in combination with (NH4)2S back surface cleaning, TiO2/Sb2Se3 solar cells with 5.6% efficiency and decent stability are obtained, showcasing the power of high-throughput strategy for accelerating the optimization of Sb2Se3 photovoltaics. A combinatorial strategy is used to accelerate the optimization of TiO2 thickness and postannealing temperature as well as Sb2Se3 thickness in Sb2Se3 thin film photovoltaics. By this high-throughput combinatorial approach, combined with (NH4)2S back surface treatment, the TiO2/Sb2Se3 solar cells achieve a device efficiency of 5.6% with impressive damp-heat and light-soaking stability.

Publisher URL: http://onlinelibrary.wiley.com/resolve/doi

DOI: 10.1002/aenm.201700866