Selenium Chemistry Modifications of CIGS Surfaces After Various Wet Etching.High Resolution XPS Studies of Buried Interface CIGS/CdS.

摘要

Although Cu(In,Ga)Se_2 is a technologically important material for thin film photovoltaic devices,the control of the superficial /interfacial chemistry is always an opened question.This point is however known to be crucial to improvement of devices.The main question is to know if the control of CIGS/CdS interface depends essentially of the last chemical treatment (i.e.CdS deposition in NH_3 environment par Chemical Bath Deposition) or rather of CIGS initial state surface.