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Wang, Yang; Wang, Peng; Zhou, Xue; Li, Chang; Li, Huizeng; Hu, Xiaotian; Li, Fengyu; Liu, Xiaoping; Li, Mingzhu; Song, Yanlin . (2018). Diffraction-Grated Perovskite Induced Highly Efficient Solar Cells through Nanophotonic Light Trapping. Advanced Energy Materials, (), 1702960–. doi:10.1002/aenm.201702960 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research