Nf. Cooray et al., LARGE-AREA ZNO FILMS OPTIMIZED FOR GRADED BAND-GAP CU(INGA)SE-2-BASEDTHIN-FILM MINI-MODULES, Solar energy materials and solar cells, 49(1-4), 1997, pp. 291-297
In this study, two deposition methods (i.e. MOCVD and sputtering metho
ds) to prepare n-type ZnO window layers for CIGS-based thin-film solar
cells are discussed. In order to make ZnO:Al transparent conductive o
xide (TCO) films prepared by DC magnetron sputtering comparable to ZnO
: BTCO prepared by MOCVD, a new ZnO sputtering process is proposed by
introducing a multilayer structure. Using these films, CIGS thin-film
solar cells with efficiencies of greater than 14% have been fabricate
d with an active area of 3.2 cm(2). This structure was adapted to fabr
icate CIGS thin-film mini-modules with efficiencies around 11% having
aperture area of 50 cm(2).