Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 11, Issue 33, Pages 30477-30483Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.9b09820
Keywords
nanomembrane; transfer; sodium chloride; sacrificial layer; flexible solar cell
Funding
- Brain Korea 21 PLUS project for Center for Creative Industrial Materials [F18SN25D1706]
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Large-scale industrial application of flexible device has called for development of transfer methods that deliver high yield and stability. Here, we show an ultrafast and chemically stable transfer method by using a water-soluble NaCl sacrificial layer. Extremely thin (10 nm) and large-area (4 in. wafer) free-standing Au nanomembranes (NMs) prepared on silicon substrate were successfully transferred to flexible PDMS substrate by dissolving the NaCl sacrificial layer. This transfer method enables highly transparent and electrically conductive Au NMs on PDMS substrate. To transfer a multilayered optoelectronic device, we fabricated flexible hydrogenated amorphous silicon (a-Si:H) solar cell on a glass substrate and transferred it to a PDMS substrate. There was no degradation of the electrical characteristic of the solar cell after the transfer. This approach enables the integration of high-temperature-processed a-Si:H solar cell onto low-temperature tolerant flexible polymer substrate without chemical contamination or damage.
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