In:
Progress in Photovoltaics: Research and Applications, Wiley, Vol. 29, No. 7 ( 2021-07), p. 668-674
Abstract:
Bifacial a‐SiO x :H/a‐SiO x :H/a‐Si:H/a‐SiO x :H/a‐SiO x :H quintuple‐junction and a‐SiO x :H/a‐SiO x :H/a‐Si:H/a‐Si:H/a‐SiO x :H/a‐SiO x :H sextuple‐junction solar cells were prepared by the PE‐CVD. The solar cell has a structure in which both sides are sandwiched between ITO layers, and the structure allows light irradiation from both sides. A total of 49 cells having an area of 0.25 cm 2 , 0.5 cm 2 , and 1 cm 2 was fabricated on a 10 cm × 10 cm substrate. The distribution of open‐circuit voltage, V oc , under low illumination in all 49 solar cells was investigated. As one example of applying bifacial multi‐junction a‐Si based solar cells as an independent power source for the Internet of Things (IoT) devices, a flexible bifacial quintuple‐junction solar cell was also prepared. In the sextuple‐junction solar cell, an open‐circuit voltage of 4.1 and 3.5 V was obtained even at a low illuminance of 3000 and 100 lux, respectively. In the quintuple‐junction solar cell formed on the polyimide film substrate, an open‐circuit voltage of 3.2 and 2.7 V was obtained at 3000 and 100 lux, respectively. The decreasing amount of the open circuit voltage when the irradiation intensity became 1/10, ΔV oc (1/10) , was 62–64 mV/cell.
Type of Medium:
Online Resource
ISSN:
1062-7995
,
1099-159X
Language:
English
Publisher:
Wiley
Publication Date:
2021
detail.hit.zdb_id:
2023295-0
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