A First Approach to the Interface Analysis of Chemical Bath Deposited In(OH,O)_xS_y Buffer Layers and CuInS_2 in Thin Film Solar Cells

摘要

Chemical bath deposition (CBD) of In(OH,O)_xS_y is a subject of ongoing research-mainly due to the objective of developing Cd-free,chalcopyrite based thin film solar cell devices [1,2].The solution chemistry,the deposition mechanism and the characteristics of CBD-In(OH,O)_xS_y thin films have been investigated to a large extend [3,4,5].The interplay between chemical bath,i.e.deposition conditions,and the performance of resulting solar cells has,however,largely remained unclear.Here we present first results concerning the analysis of the In(OH,O)_xS_y/CuInS_2 interface and its sensitivity to changes in the chemical environment during the deposition process.Solar cell performances of the investigated devices are also reported.