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09 February 2025
 
  » arxiv » 1508.0223

 Article overview



Broadband perfect light trapping in the thinnest monolayer graphene-MoS$_{2}$ photovoltaic cell
Yun-Beng Wu ; Weng Yang ; Tong-Biao Wang ; Xin-Hua Deng ; Jiang-Tao Liu ;
Date 2 Aug 2015
AbstractThe light absorption of a monolayer graphene-molybdenum disulfide photovoltaic (GM-PV) cell in a wedge-shaped microcavity with a spectrum-splitting structure is investigated theoretically. The GM-PV cell, which is three times thinner than the traditional photovoltaic cell, exhibits up to 98\% light absorptivity in a wide wavelength range. This rate exceeds the fundamental limit of nanophotonic light trapping in solar cells. The effects of defect layer thickness, GM-PV cell position in the microcavity, incident angle, and lens aberration on the light absorption rate of the GM-PV cell is explored. Regardless of errors, the GM-PV cell can still achieve at least 90\% light absorptivity with the current technology. Our proposal provides different methods to design light-trapping structures and apply spectrum-splitting systems.
Source arXiv, 1508.0223
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