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Effect of oxygen precipitates in solar grade silicon on minority carrier lifetime and efficiency of solar cells
- Source :
- Rare Metals. 25:141-145
- Publication Year :
- 2006
- Publisher :
- Springer Science and Business Media LLC, 2006.
-
Abstract
- The effect of oxygen precipitates on minority carrier lifetime and performance of solar cell was studied by means of Fourier Transform Infrared Spectroscopy (FTIR), quasi-steady state photoconductance (QSSPCD), optical microscope, spectrum response and solar cell efficiency test. The minority carrier lifetime and performance of solar cell reduced depend on oxygen precipitates. A few of oxygen precipitates have formed after single-step annealing; and they do not impact the efficiency dramatically. Pre-annealing at 650 °C for 4 h enhances the oxygen precipitation when it is subjected to middle temperature annealing. The solar cells performance decayed sharply. Especially annealing at 950 °C for 3 h, the V os and I sc of cells decrease 12% and 25% respectively. Few oxygen precipitates have formed in silicon after high temperature annealing at about 1050 °C whether pre-annealing is used or not, and the performance of cells is not be affected.
- Subjects :
- Materials science
Silicon
Annealing (metallurgy)
Metals and Alloys
Analytical chemistry
chemistry.chemical_element
Carrier lifetime
Condensed Matter Physics
law.invention
Solar cell efficiency
chemistry
Oxygen precipitates
Optical microscope
law
Solar cell
Materials Chemistry
Physical and Theoretical Chemistry
Fourier transform infrared spectroscopy
Subjects
Details
- ISSN :
- 10010521
- Volume :
- 25
- Database :
- OpenAIRE
- Journal :
- Rare Metals
- Accession number :
- edsair.doi...........fcc79ed0161313139286b1b73156a0c0