A-Si thin-film solar module is your best choice on energy1. Lower cost
(1)Producing 1MW of crystalline silicon solar cells consume 10 - 12
tons of high-purity silicon. To consume the same quantity of
silicon a-Si modules have to exceed 200MW.
(2)Energy pay-back time (EPT):
a-Si modules≈1.6 year< c-silicon PV module2.2 year
(3)30% more power from a-Si modules with the same budget.
2. More power from a-Si
(1)Better performance at higher temperatures
Pmeffec. = Pm[1 + a(T - 25℃)]Here: a -- the power temperature coefficient of the module
Amorphous Silicon:a≈ -0.19%
Crystalline Silicon:Pmeffec.=1000W ×[1-0.5%(60 ℃ -25℃)] =825W
Amorphous Silicon:Pmeffec.=1000W ×[1 -0.19%(60 ℃ -25℃)] =933.5W
a-Si modules are performing 13% better than crystalline!
(2)Low light conditionsIf a crystalline panel is shadowed 1/10 of
its area, the power loss will be 50%, while for a-Si PV modules, it
will be only 10%. So it’s much better to integrate a-Si PV modules
if as an example building is shadowed unavoidably.
3. Better spectral response
4. More solid color
Effects comparison between crystalline silicon module and a-Si module |
5. Transparency
Transparency range from 1% to 15% |
6. Sunshading (G -Value)The energy transmission of the sun spectrum is represented by the G-value. The smaller G-value is, the better the sun shading effect is.
G-value | |
Single layer glass | ~80% |
Double-layer glass without coating | ~ |
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