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- Title
Triple-Junction Hybrid Tandem Solar Cells with Amorphous Silicon and Polymer-Fullerene Blends.
- Authors
Taehee Kim; Hyeok Kim; Jinjoo Park; Hyungchae Kim; Youngwoon Yoon; Sung-Min Kim; Chonghoon Shin; Heesuk Jung; Inho Kim; Doo Seok Jeong; Honggon Kim; Jin Young Kim; BongSoo Kim; Min Jae Ko; Hae Jung Son; Changsoon Kim; Junsin Yi; Seunghee Han; Doh-Kwon Lee
- Abstract
Organic-inorganic hybrid tandem solar cells attract a considerable amount of attention due to their potential for realizing high efficiency photovoltaic devices at a low cost. Here, highly efficient triple-junction (TJ) hybrid tandem solar cells consisting of a double-junction (DJ) amorphous silicon (a-Si) cell and an organic photovoltaic (OPV) rear cell were developed. In order to design the TJ device in a logical manner, a simulation was carried out based on optical absorption and internal quantum efficiency. In the TJ architecture, the high-energy photons were utilized in a more efficient way than in the previously reported a-Si/OPV DJ devices, leading to a significant improvement in the overall efficiency by means of a voltage gain. The interface engineering such as tin-doped In2O3 deposition as an interlayer and its UV-ozone treatment resulted in the further improvement in the performance of the TJ solar cells. As a result, a power conversion efficiency of 7.81% was achieved with an open-circuit voltage of 2.35 V. The wavelength-resolved absorption profile provides deeper insight into the detailed optical response of the TJ hybrid solar cells.
- Subjects
SOLAR cells; PHOTOVOLTAIC cells; AMORPHOUS silicon; LIGHT absorption; PHOTONS
- Publication
Scientific Reports, 2014, p1
- ISSN
2045-2322
- Publication type
Article
- DOI
10.1038/srep07154