Journal
2019 IEEE 46TH PHOTOVOLTAIC SPECIALISTS CONFERENCE (PVSC)
Volume -, Issue -, Pages 1867-1871Publisher
IEEE
Keywords
CIGS; thermal evaporation of NaCl; sodium doping; solution processing
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Na post-deposition treatments are commonly used to tackle the fine grained layers that are prevalent in solution-grown CIGS absorber layers. This work studies the effect of an evaporated NaCl layer on the electrical and morphological properties of amine-thiol solution-processed CIGS solar cells. Here, the NaCl layer acts as a post-deposition Na source and its application resulted in a CIGS device with superior JV characteristics, including a power conversion efficiency increase from 1.3% for a Na free glass substrate to 8.4 % with NaCl post deposition treatment.
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