M Bliss - PV-SAT 7 - Performance of an a-Si Mini Module in the Initial Degraded and Annealed States.pdf (472.41 kB)
Download filePerformance of an amorphous silicon mini module in the initial, light-induced degraded and annealed states
conference contribution
posted on 2011-05-11, 09:29 authored by Martin BlissMartin Bliss, Jiang Zhu, Tom BettsTom Betts, Ralph GottschalgThis work analyses the performance of single junction amorphous silicon (a-Si) mini modules in three main states: the initial non-degraded state, degraded state after light soaking and recovered state after thermal annealing. The applied methods of controlled indoor light-soaking and thermal annealing are detailed. Performance measurements are carried out under varying spectrum (E), light intensity (G) and temperature (T). Results show a reduction in STC power of up to 27.5% during the first 250h light soaking and a recovery of 56% after annealing for 250h at 80°C in the dark. After light soaking, devices also showed a reduction in low light performance and an increase in temperature coefficients, which was partly re-versed after annealing.
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School
- Mechanical, Electrical and Manufacturing Engineering
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- Centre for Renewable Energy Systems Technology (CREST)