SciTech Connect

Title: Fabrication of stable large-area thin-film CdTe photovoltaic modules. Annual subcontract report, 10 May 1992--9 May 1993

Fabrication of stable large-area thin-film CdTe photovoltaic modules. Annual subcontract report, 10 May 1992--9 May 1993 This report highlights the progress made by Solar Cells, Inc. (SCI), in its program to produce 60-cm {times} 120-cm solar modules based on CdTe films. During the past year, confirmed efficiency has increased to 10.4% (active area) on a 1 cm{sup 2} cell, 9.8% (aperture area) on a 64-cm{sup 2} 8-cell submodule, and 6.6% (total area) on a 7200-cm{sup 2} module. A module measured in-house had a power output of 53 W, for a total-area efficiency of 7.4%. Average efficiency of modules produced is steadily increasing and standard deviation is decreasing; in a limited run of 12 modules, results were 6.3% ({plus_minus} 0.2%). Field testing has begun; a nominal 1-kW array of 24 modules was set up adjacent to SCI`s facilities. Analysis indicates that present modules are limited in efficiency by shunt resistance and optical absorption losses in the glass superstrate. Loss analysis of present devices allows us to project a module efficiency of 11.8%. A third generation deposition method -- atmospheric pressure elemental vapor deposition (APEVD) has been brought on-line and has produced good quality CdTe. In addition, SCI is expanding its proactive safety, health, environmental, and disposal program dealing with issues surrounding cadmium.
Authors: ;
Publication Date:
OSTI Identifier:OSTI ID: 10181903
Report Number(s):NREL/TP--413-5740
ON: DE93018204
DOE Contract Number:AC02-83CH10093
Resource Type:Technical Report
Resource Relation:Other Information: PBD: Aug 1993
Research Org:National Renewable Energy Lab., Golden, CO (United States); Solar Cells, Inc., Toledo, OH (United States)
Sponsoring Org:USDOE, Washington, DC (United States)
Country of Publication:United States
Language:English
Subject: 14 SOLAR ENERGY; CADMIUM TELLURIDE SOLAR CELLS; FABRICATION; PROGRESS REPORT; CADMIUM TELLURIDES; THIN FILMS; SOLAR CELL ARRAYS; DIMENSIONS; EFFICIENCY; MATERIALS; ELECTRICAL PROPERTIES; TIN OXIDES; GLASS 140501; PHOTOVOLTAIC CONVERSION