期刊
ACS APPLIED MATERIALS & INTERFACES
卷 9, 期 25, 页码 21276-21282出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.7b04525
关键词
antireflection; surface structuring; PDMS; sticker; light absorption; solar cells
资金
- National Research Foundation of Korea (NRF) grant - Korean Government (MSIP) [NRF-2017R1A2B4002738]
- research and development program of the Korea Institute of Energy Research [B7-2426]
- Global Research Laboratory Program through the National Research Foundation of Korea (NRF) - Ministry of Science, ICT & Future Planning [2009-00439]
- Max Planck POSTECH/KOREA Research Initiative Program through the National Research Foundation of Korea (NRF) - Ministry of Science, ICT & Future Planning [2016K1A4A4A01922028]
- CNU research fund of Chungnam National University
We designed and fabricated a random-size inverted-pyramid structured polydimethylsiloxane (RSIPS-PDMS) sticker to enhance the light absorption of solar cells and thus increase their efficiency. The fabricated sticker was laminated onto bare glass and crystalline silicon (c-Si) surfaces; consequently, low solar-weighted reflectance values were obtained for these surfaces (6.88 and 17.2%, respectively). In addition, we found that incident light was refracted at the PDMS air interface of each RSIPS, which redirected the incident power and significantly increased the optical path length in the RSIPS-PDMS sticker which was 14.7% greater than that in a flat-PDMS sticker. Moreover, we investigated power reflection and propagation through the RSIPS-PDMS sticker using a finite-difference time-domain method. By attaching an RSIPS-PDMS sticker onto both an organic solar cell (OSC) based on a glass substrate and a c-Si solar cell, the power conversion efficiency of the OSC and the c-Si solar cell were increased from 8.57 to 8.94% and from 16.2 to 17.9%, respectively. Thus, the RSIPS-PDMS sticker is expected to be universally applicable to the surfaces of solar cells to enhance their light absorption.
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