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Title: An efficient light trapping scheme based on textured conductive photonic crystal back reflector for performance improvement of amorphous silicon solar cells

An efficient light trapping scheme named as textured conductive photonic crystal (TCPC) has been proposed and then applied as a back-reflector (BR) in n-i-p hydrogenated amorphous silicon (a-Si:H) solar cell. This TCPC BR combined a flat one-dimensional photonic crystal and a randomly textured surface of chemically etched ZnO:Al. Total efficiency enhancement was obtained thanks to the sufficient conductivity, high reflectivity and strong light scattering of the TCPC BR. Unwanted intrinsic losses of surface plasmon modes are avoided. An initial efficiency of 9.66% for a-Si:H solar cell was obtained with short-circuit current density of 14.74 mA/cm{sup 2}, fill factor of 70.3%, and open-circuit voltage of 0.932 V.
Authors:
; ; ; ; ; ; ;  [1] ;  [2]
  1. Tianjin Key Laboratory of Photoelectronic Thin-Film Devices and Technique, Institute of Photoelectronics, Nankai University, Tianjin 300071 (China)
  2. Department of Electrical Engineering and Computer Science, South Dakota State University, Brookings, South Dakota 57007 (United States)
Publication Date:
OSTI Identifier:
22311347
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 105; Journal Issue: 7; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; AMORPHOUS STATE; CRYSTALS; CURRENT DENSITY; EFFICIENCY; ELECTRIC POTENTIAL; ELECTRICAL FAULTS; FILL FACTORS; HYDROGENATION; LIGHT SCATTERING; REFLECTIVITY; SILICON SOLAR CELLS; SURFACES; TEXTURE; TRAPPING; VISIBLE RADIATION; ZINC OXIDES