Reversed organic-inorganic hybrid tandem solar cells for improved interfacial series resistances and balanced photocurrents
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- Reversed organic-inorganic hybrid tandem solar cells for improved interfacial series resistances and balanced photocurrents
- Kim, Taehee; Kim, Youn-Su; Choi, Jin Young; Jeon, Jun Hong; Park, Won Woong; Moon, Sun Woo; Kim, Sung-Min; Han, Seunghee; Kim, BongSoo; Lee, Doh-Kwon; Kim, Honggon; Kim, Jin Young; Ko, Min Jae; Kim, Kyungkon
- Amorphous silicon; Organic solar cells; Hybrid tandem solar cells; Interfacial series resistance; Balanced photocurrents
- Issue Date
- ELSEVIER SCIENCE SA
- SYNTHETIC METALS, v.175, no., pp.103 - 107
- We report a promising approach to fabricate organic-inorganic hybrid tandem photovoltaic devices with a reversed configuration. High bandgap hydrogenated amorphous silicon (a-Si:H) was deposited with plasma-enhanced chemical vapor deposition onto a solution-processed low bandgap organic photovoltaic (OPV) subcell. Two important factors for efficient tandem solar cells, interfacial series resistance (R-S,R-int) and balanced photocurrents, were investigated. The intimate interfacial contact eliminated the R-S,R-int, and sufficient transmittance of the OPV front subcell led to the well-balanced photocurrents. As a result, this reversed hybrid tandem device showed an enhanced efficiency of 3.3% and an open-circuit voltage of 1.51 V.
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