期刊
NANOSCALE
卷 11, 期 41, 页码 19488-19496出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c9nr05776e
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资金
- National Research Foundation of Korea (NRF) - Ministry of Science, ICT (MSIT) [NRF-2017R1A2B3010927, NRF-2017R1A4A1015022]
- Technology Development Program to Solve Climate Changes [NRF-2015M1A2A2056827]
- Creative Materials Discovery Program [2016M3D1A1027664]
- Swedish Energy Agency [43294-1]
Electron selective layers are important to the efficiency, stability and hysteresis of perovskite solar cells. Photo-annealing is a low-cost, roll-to-roll-compatible process that can be applied to the post-treatment fabrication of sol-gel based metal oxide layers. Here, we fabricate an amorphous titanium oxide electron selective layer at a low temperature in a dry atmosphere using a UV light annealing system and compare it with a thermal annealing process. Active oxygen species are created by using UV light to promote hydrolysis and condense the TiO2 precursor, which removes organic ligands effectively. The photo-annealed TiO2-based perovskite solar cell has a power conversion efficiency of 19.37% without hysteresis.
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