Triple-junction hybrid tandem solar cells with amorphous silicon and polymer-fullerene blends

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

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23 Scopus citations


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.

Original languageEnglish
Article number7154
JournalScientific Reports
StatePublished - 2014


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