2015/08/02 by Yun-Beng Wu, Wu, Yun-Beng, Weng Yang +10
Engineering · Physics and Astronomy · #FOS: Physical sciences #Nanowire Synthesis and Applications #Optics (physics.optics) #Semiconductor Quantum Structures and Devices #Thin-Film Transistor Technologies #physics.optics
paper · pdf · doi:10.48550/arxiv.1508.00223
19 pages, 3 figures
arxiv created 2015/08/02 · openalex publication_date 2015/08/02 · arxiv updated 2015/08/04 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
The 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.