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Upconversion Luminescence from Ln3+(Ho3+,Pr3+) Ion-Doped BaCl2 Particles via NIR Light of Sun Excitation

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journal contribution
posted on 16.04.2018, 00:00 by Hong Jia, Zhongli Liu, Lamei Liao, Yanhong Gu, Chaoliang Ding, Jianguo Zhao, Weiying Zhang, Xiaoke Hu, Xun Feng, Zhi Chen, Xiaofeng Liu, Jianrong Qiu
Generation of visible photons by upconverting materials under excitation by the near-infrared part of sunlight is very attractive for complete utilization of solar energy. Visible upconversion luminescence is efficiently generated in BaCl2:Ln3+ (Ho3+ or Pr3+) particles via excitation with broad band near-infrared part of sunlight. We observed greatly enhanced photocurrent response from the thin-film hydrogenated amorphous silicon solar cell covered with the upconversion layer of BaCl2:Ho3+ phosphor, which demonstrates a prospective application for near-infrared photoresponse devices.