title: Broadband perfect light trapping in the thinnest monolayer graphene-MoS2 photovoltaic cell: the new application of spectrum-splitting structure.
abstract: 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 absorptance 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 absorptance of the GM-PV cell are explored. Despite these effects, the GM-PV cell can still achieve at least 90% light absorptance with the current technology. Our proposal provides different methods to design light-trapping structures and apply spectrum-splitting systems.
authors: Nanoscale Science and Technology Laboratory, Institute for Advanced Study, Nanchang University, Nanchang 330031, China.|Department of Physics, Nanchang University, Nanchang 330031, China.
authors: Yun-Ben
authors: YB
authors: Wu
authors: Beijing Computational Science Research Center, Beijing 100094, China.
authors: Wen
authors: W
authors: Yang
authors: Department of Physics, Nanchang University, Nanchang 330031, China.
authors: Tong-Biao
authors: TB
authors: Wang
authors: Department of Physics, Nanchang University, Nanchang 330031, China.
authors: Xin-Hua
authors: XH
authors: Deng
authors: Nanoscale Science and Technology Laboratory, Institute for Advanced Study, Nanchang University, Nanchang 330031, China.|Department of Physics, Nanchang University, Nanchang 330031, China.
authors: Jiang-Tao
authors: JT
authors: Liu