Enhancing near-infrared solar cell response using upconverting transparentceramics
2010; Elsevier BV; Volume: 95; Issue: 2 Linguagem: Inglês
10.1016/j.solmat.2010.09.018
ISSN1879-3398
AutoresM. Liu, Yalin Lu, Zhiyu Xie, Gan‐Moog Chow,
Tópico(s)Photorefractive and Nonlinear Optics
ResumoIn order to demonstrate efficiency improvement of solar cells through utilization of frequency-shifted sub-band-gap photons, we prepared Y3Al5O12 transparent ceramics co-doped with 3.0 at% Yb3+ and 0.5 at% Er3+ (YAG:3.0Yb/0.5Er) by solid state reaction. The material’s upconversion luminescence was investigated and it was found that near-infrared light could be effectively converted to green light centered at 563 nm, where a dye-sensitized solar cell normally possessed high spectral response. Using a thin disk of YAG:3.0Yb/0.5Er transparent ceramics attached to the rear of the dye-sensitized solar cell, the near-infrared response of the dye-sensitized solar cell was enhanced, due to the frequency upconversion.
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