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Properly encapsulated chalcopyrite-based solar modules from a number of manufacturers have passed the accelerated ageing tests in damp heat.Non-encapsulated modules after damp heat exposure show an increased series resistance which is contributed significantly from the increase in lateral sheet resistance of the transparent Al-doped zinc oxide (ZAO) front contact. We have shown previously, that a...
Accelerated ageing in damp heat (DH) can reduce the stability of chalcopyrite solar modules. The decrease in lateral conductivity of the transparent Al-doped zinc oxide (ZAO) front contact contributes significantly to this effect. We present a study on the optical and electrical properties of ZAO without encapsulation on transparent quartz glass substrates with smooth and rough morphology before and...
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