Defect Synergistic Regulations of Li&Na Co-Doped Flexible Cu ZnSn(S,Se) Solar Cells Achieving over 10% Certified Efficiency.

Ion doping is an effective strategy for achieving high-performance flexible Cu ZnSn(S,Se) (CZTSSe) solar cells by defect regulations. Here, a Li&Na co-doped strategy is applied to synergistically regulate defects in CZTSSe bulks. The quality absorbers with the uniformly distributed Li and Na elements are obtained using the solution method, where the acetates (LiAc and NaAc) are as additives.

Efficient Environmentally Friendly Flexible CZTSSe/ZnO Solar Cells by Optimizing ZnO Buffer Layers.

Flexible CZTSSe solar cells have attracted much attention due to their earth-abundant elements, high stability, and wide application prospects. However, the environmental problems caused by the high toxicity of the Cd in the buffer layers restrict the development of flexible CZTSSe solar cells. Herein, we develop a Cd-free flexible CZTSSe/ZnO solar cell.

10.24% Efficiency of Flexible Cu ZnSn(S,Se) Solar Cells by Pre-Evaporation Selenization Technique.

Flexible Cu ZnSn(S,Se) (CZTSSe) solar cells show great potential due to non-toxicity and low cost. The quality of CZTSSe absorber suffering from the high-temperature selenization process is the key to overcoming open-circuit voltage (V ) deficit and obtaining high efficiency. In this work, the authors develop a selenization technique to improve the quality of the CZTSSe layer by pre-evaporation selenization.

Novel symmetrical bifacial flexible CZTSSe thin film solar cells for indoor photovoltaic applications.

Environment-friendly flexible CuZnSn(S,Se) (CZTSSe) solar cells show great potentials for indoor photovoltaic market. Indoor lighting is weak and multi-directional, thus the researches of photovoltaic device structures, techniques and performances face new challenges. Here, we design symmetrical bifacial CZTSSe solar cells on flexible Mo-foil substrate to efficiently harvest the indoor energy.

Effect of Micro-Scale Er on the Microstructure and Fluidity of ZL205A Alloy.

The effect of Er addition on the fluidity and microstructure transformation of the as-cast and T5 heat-treated ZL205A alloys was investigated by optical microscope (OM), scanning electron microscopy (SEM), X-ray diffraction (XRD) and energy dispersive spectrometer (EDS). The fluidity of the liquid metal after adding Er was tested and the fracture characteristics of the material were analyzed. The results indicated that Er was mainly dissolved into an α-Al matrix near the grain boundaries (GBs).