Journal
JOURNAL OF LUMINESCENCE
Volume 204, Issue -, Pages 448-456Publisher
ELSEVIER
DOI: 10.1016/j.jlumin.2018.08.005
Keywords
Upconversion; Amorphous silicon solar cell; Phosphors
Categories
Funding
- Department of Science and Technology - Science and Engineering Research Board (DST-SERB), Govt. of India, India [SB/S2/CMB-083/2013]
- project AMANSI through the National Solar Science fellowship Program of Ministry of New and Renewable Energy (MNRE), Govt. of India, India
- Kerala State Council for Science, Technology & Environment (KSCSTE), Govt. of Kerala, India
- Council of Scientific and Industrial Research (CSIR), Govt. of India, India
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Yb3+/Er3+ co-doped Y2O3, YOF and YF3 upconversion (UC) phosphors were synthesized by co-precipitation method. The three upconversion phosphor samples show strong green (540 nm) and red (660 nm) emission bands visible to naked eyes even at the low intense incident light. The potential application of Y2O3, YOF, and YF3 UC phosphors was demonstrated by incorporating them in amorphous silicon thin film solar cells and they showed upconversion current densities of 0.36 mA/cm(2), 0.23 mA/cm(2), and 0.207 mA/cm(2) respectively when the cell was illuminated with a 980 nm IR laser. Intensity-dependent J-V studies were carried out to understand the effectiveness of UC phosphors in improving solar cell parameters. An improvement of 7.5% in J(sc) was obtained for amorphous silicon solar cell incorporated with YF3 UC phosphors under AM1.5 along with 980 nm NIR illumination.
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