Bifacial Cu(In_1-x,Ga_x)Se₂ (CIGS) thin film solar cells were fabricated on titanium-doped indium oxide (ITiO) coated soda-lime glass substrate, and the effect of cesium fluoride (CsF) treatment on solar cell performance was investigated. CsF treatment improved the photovoltaic properties of CIGS/ITiO-based solar cells not only under front-side illumination but also under rear-side illumination. The quantum efficiency for rear-side illumination improved significantly in CsF-treated CIGS solar cells. As a result, the bifaciality improved in the CsF-treated CIGS solar cell. ITiO exhibited good contact with the CIGS thin film, regardless of Cs incorporation. In addition, the effect of heat-light soaking treatment was also investigated in CIGS/ITiO-based solar cells.

双面Cu(In _1-x ,Ga _x )Se ₂(CIGS) 薄膜太阳能电池在钛掺杂氧化铟 (ITiO) 涂层的钠钙玻璃基板上制造，并研究了氟化铯 (CsF) 处理对太阳能电池性能的影响。CsF 处理不仅在正面照射下而且在背面照射下都改善了基于 CIGS/ITO 的太阳能电池的光伏性能。在 CsF 处理的 CIGS 太阳能电池中，背面照明的量子效率显着提高。结果，经 CsF 处理的 CIGS 太阳能电池的双面性得到改善。ITiO 表现出与 CIGS 薄膜的良好接触，无论 Cs 掺入如何。此外，还研究了热光浸泡处理对 CIGS/ITiO 基太阳能电池的影响。