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학술지 Transparent Thin-Film Silicon Solar Cells for Indoor Light Harvesting with Conversion Efficiencies of 36% without Photodegradation
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저자
김가영, 임정욱, 김지은, 윤선진, 박민아
발행일
202006
출처
ACS Applied Materials & Interfaces, v.12 no.24, pp.27122-27130
ISSN
1944-8244
출판사
American Chemical Society (ACS)
DOI
https://dx.doi.org/10.1021/acsami.0c04517
협약과제
19HB3900, 웨어러블 및 유연 태양전지를 위한 유연 투명전극 소재 기술개발, 임정욱
초록
With the development of the Internet of Things (IoT), indoor photovoltaics are attracting considerable interest owing to their potential to benefit various IoT-related fields. Therefore, this study investigates the use of transparent hydrogenated amorphous silicon (a-Si:H) solar cells for a broad range of applications, including indoor light harvesting. High-gap triple layers were employed in the a-Si:H solar cells to obtain a high shunt resistance and high short-circuit current, JSC, and open-circuit voltage, VOC, under indoor illumination. Additionally, multiple color-adjusting layers were added without noticeable costs to the conversion efficiency. The maximum efficiency of 36.0% was obtained at a transmittance of 20.44% under white LED light (3000 lx and 0.92 mW cm-2). Furthermore, the fabricated transparent solar cells show excellent long-term performance, sustaining over 99% of original efficiency under continuous indoor light illumination for 200 h. These cells could accelerate the progress of energy harvesting in IoT applications and facilitate the construction of integrated photovoltaics.
키워드
amorphous silicon solar cells, colored solar cells, indoor photovoltaics, thin film silicon solar cells, transparent solar cells
KSP 제안 키워드
Conversion efficiency(C.E.), Energy Harvesting(EH), IOT applications, Indoor illumination, Internet of thing(IoT), LED light, Light harvesting, Long-term performance, Open circuit voltage(VOC), Short-Circuit Current, Shunt Resistance