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Title: Optical Design and Analysis of Textured a-Si Solar Cells: Preprint

The effect of texture on enhancement and losses in photocurrent in a-Si solar cells is explored using PVOPTICS software and measurements on a-Si device structures. The texture angle has a major impact on light trapping and internal reflection. Increasing the angle causes better internal trapping in the i-layer, but also higher SnO2/a-Si reflection losses, as well as SnO2 and metal absorption losses. Parasitic absorption in the textured SnO2 due to back reflected light is 1-2 mA/cm2 for typical designs. N-i-p cells have a fundamental advantage over p-i-n cells since the textured TCO is at the rear of the device leading to lower losses.
Authors:
; ;
Publication Date:
OSTI Identifier:
15007045
Report Number(s):
NREL/CP-520-31477
TRN: US200413%%94
DOE Contract Number:
AC36-99-GO10337
Resource Type:
Conference
Resource Relation:
Conference: Conference title not supplied, Conference location not supplied, Conference dates not supplied; Other Information: PBD: 1 May 2002; Related Information: Prepared for the 29th IEEE PV Specialists Conference, 20-24 May
Research Org:
National Renewable Energy Lab., Golden, CO. (US)
Sponsoring Org:
US Department of Energy (US)
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; 36 MATERIALS SCIENCE; ABSORPTION; DESIGN; PHOTOCURRENTS; REFLECTION; SOLAR CELLS; TEXTURE; TRAPPING; SOLAR ENERGY PV; OPTICAL ANALYSIS; A-SI SOLAR CELLS; PHOTOCURRENT; VARIABLE ANGLE SPECTROSCOPIC ELLIPSOMETRY (VASE); LIGHT TRAPPING; PARASITIC ABSORPTION; SOLAR ENERGY - PHOTOVOLTAICS