4.8 Article

Platinum Alloy Tailored All-Weather Solar Cells for Energy Harvesting from Sun and Rain

Journal

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 55, Issue 46, Pages 14410-14414

Publisher

WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201608584

Keywords

alloy electrode; all-weather solar cell; charge transfer; energy conversion

Funding

  1. National Natural Science Foundation of China [21503202, 61604143, U1037604]
  2. Shandong Provincial Natural Science Foundation [ZR2011BQ017]

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Solar cells that can harvest energy in all weathers are promising in solving the energy crisis and environmental problems. The power outputs are nearly zero under dark conditions for state-of-the-art solar cells. To address this issue, we present herein a class of platinum alloy (PtMx, M=Ni, Fe, Co, Cu, Mo) tailored all-weather solar cells that can harvest energy from rain and realize photoelectric conversion under sun illumination. By tuning the stoichiometric Pt/M ratio and M species, the optimized solar cell yields a photoelectric conversion efficiency of 10.38% under simulated sunlight irradiation (AM1.5, 100 mW cm(-2)) as well as current of 3.90 mu A and voltage of 115.52 mu V under simulated raindrops. Moreover, the electric signals are highly dependent on the dripping velocity and the concentration of simulated raindrops along with concentrations of cation and anion.

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