期刊
ADVANCED FUNCTIONAL MATERIALS
卷 29, 期 19, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adfm.201900830
关键词
antireflection; diffraction grating; perovskite solar cell; TiO2 scaffold
类别
资金
- National Natural Science Foundation of China [51772197, 51422206, 51372159]
- 1000 Youth Talents Plan
- Key University Science Research Project of Jiangsu Province [17KJA430013]
- 333 High-level Talents Cultivation Project of Jiangsu Province
- Six Talents Peak Project of Jiangsu Province
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
Organic-inorganic halide perovskite solar cells are one of the most efficient photovoltaic devices, and their power conversion efficiency (PCE) continues to grow rapidly due to the optimization of device architecture and functional materials. The involved optical design has an important impact on performance by affecting the light harvesting capability. Here, demonstrated is a simple and effective strategy to boost device performance from the perspective of light management. A diffraction grating pattern into the TiO2 scaffold and antireflection layer is simultaneously introduced to construct a double grating design for perovskite solar cells. The grating pattern obtained using a commercial compact disk as the hard mold can modulate light transport by enhancing the light transmittance and, thus, light absorption in perovskite solar cells. The grating pattern-induced light trapping can significantly increase the short-circuit current density and PCE by 4.8% and 7.9%, respectively, on average. The present work develops a feasible method by tailoring the morphology-related optical property to further improve the performance of perovskite solar cells. The double grating design can also generate structural color and can provide an alternative solution for fabricating colorful solar cells.
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