| 摘要 |
Solar photovoltaic (PV) devices, e.g., those based on the Copper Indium Selenide (CIS) family of absorbers, including CuIn(1-x)Ga(x)Se2 (CIGS) absorber thin-film PV devices, are provided. Embodiments provide PV devices comprising an alkali metal-containing polymeric film (ACPF), which is a film formed from a composite comprising an alkali metal-containing material and a polymer. Embodiments of this disclosure also provide PV devices comprising a thermally stable polymer film that does not contain an alkali metal (TSP). Included within the embodiments of this disclosure are flexible PV devices comprising a flexible base substrate onto which one or more ACPFs and/or TSPs is/are provided, as well as flexible PV devices wherein an ACPF or TSP itself constitutes the base substrate in the form of a stand alone film. Processes for making such flexible PV devices include roll-to-roll processes. PV devices disclosed herein will provide improved energy conversion efficiencies as a result of the delivery of sodium dopant into the absorber layer. Also disclosed are combinations of such PV devices and batteries that may store energy generated from the PV absorber. This disclosure also relates to shunt circuits for connecting the PV absorber to a battery in a combination PV/battery device and to array connectors for connecting such PV devices, either with or without batteries.
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