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Light pollution is the presence of anthropogenic artificial light in otherwise dark conditions. [12] [13] [14] [15]The term is most commonly used in relation to in the outdoor environment and surrounding, but is also used to refer to artificial light indoors.
Global warming potential of CZTS and Zn 3 P 2 were found 38 and 30 grams CO 2-eq/kWh while their corresponding EPBT were found 1.85 and 0.78 years, respectively. [54] Overall, CdTe and Zn 3 P 2 have similar environmental effects but can slightly outperform CIGS and CZTS. [ 54 ]