Already, several technologies of polycrystalline thin‐film photovoltaic materials have
achieved certified record small‐cell power conversion efficiencies exceeding 22%. They are …

In the past tens of years, the power conversion efficiency of Cu (In, Ga) Se 2 (CIGS) has
continuously improved and been one of the fastest growing photovoltaic technologies that …

The efficiency of Cu (In, Ga) Se2 (CIGS)-based solar cells can be markedly improved by
controlled introduction of alkali metal (AM) atoms using post-deposition treatment (PDT) after …

Chalcopyrite solar cells achieve efficiencies above 23%. The latest improvements are due to
post‐deposition treatments (PDT) with heavy alkalis. This study provides a comprehensive …

A NaF/KF postdeposition treatment (PDT) has recently been employed to achieve new
record efficiencies of Cu (In, Ga) Se2 (CIGSe) thin film solar cells. We have used a …

Abstract Introducing K into Cu (In, Ga)(Se, S) 2 (CIGS) absorbers has led to recent world
record power conversion efficiencies for thin film polycrystalline solar cells. In this work, the …

Heavy alkali metal treatment is a key factor to approach high efficiency in Cu (In, Ga) Se 2
(CIGS) solar cells. Here, we show that the Cs-induced surface modification on CIGS thin-film …

Copper indium selenide chalcopyrite-structure alloys with gallium (CIGS) are unique among
the highest performing photovoltaic (PV) semiconductor technologies. They are structurally …

Here we reported the first principle-based calculations for the structural and optoelectronic
properties of AInSe 2 (A​=​ K and Li) chalcopyrite type single crystals with-in the framework …

This contribution studies the potential of an RbF postdeposition treatment (RbF‐PDT) of
wide‐gap (Ag, Cu)(In, Ga) Se2 (ACIGS) absorbers to improve the corresponding solar cell …