Abstract
Ordered CuIn(1−x)GaxSe2 (CIGS) nanopore films were prepared by one-step electrodeposition based on porous anodized aluminum oxide templates. The as-grown film shows a highly ordered morphology that reproduces the surface pattern of the substrate. Raman spectroscopy and X-ray diffraction pattern show that CIGS nanopore films had ideal chalcopyrite crystallization. Energy dispersive spectroscopy reveals the Cu-Se phases firstly formed in initial stage of growth. Then, indium and gallium were incorporated in the nanopore films in succession. Cu-Se phase is most likely to act as a growth promoter in the growth progress of CIGS nanopore films. Due to the high surface area and porous structure, this kind of CIGS films could have potential application in light-trapping CIGS solar cells and photoelectrochemical water splitting.
Highlights
In recent years, solar cells attract people’s attention for its clean and renewable properties [1]
We firstly fabricated CIGS nanopore films using one-step electrodeposition method based on anodized aluminum oxide (AAO) templates
Due to the high specific surface area and the porous structure, the ordered CIGS nanopore films could be used in lighttrapping solar cells and photoelectrochemical water splitting
Summary
Solar cells attract people’s attention for its clean and renewable properties [1]. Photoelectrochemical water splitting property of CIGS has been discussed in works in recent years [8,9]. Several methods have been reported to fabricate CIGS thin films such as co-evaporation, electrode position, selenization of sequentially stacked precursors, etc. Much effort has been devoted to fabricating CIS/CIGS nanowires and nanotubes, trying to improve cell properties through changing their microstructures [21,22,23,24]. We firstly fabricated CIGS nanopore films using one-step electrodeposition method based on anodized aluminum oxide (AAO) templates. Due to the high specific surface area and the porous structure, the ordered CIGS nanopore films could be used in lighttrapping solar cells and photoelectrochemical water splitting.
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