Highly efficient Si-nanorods/organic hybrid core-sheath heterojunction solar cells
- 11 July 2011
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 99 (2), 021104
- https://doi.org/10.1063/1.3610461
Abstract
We report a hybrid solar cell based on well-aligned crystalline silicon nanorods (SiNRs) and an organic semiconductor, 2,2′,7,7′-Tetrakis-(N,N-di-4-methoxyphenylamino)-9,9′-spirobifluorene (Spiro-OMeTAD), in a core-sheath heterojunction structure. The device is formed by spin coating Spiro-OMeTAD on SiNRs array fabricated by electroless chemical etching. A silver grid on a conductive poly (3,4-ethylene-dioxythiophene): polystyrenesulfonate layer is used as the top transparent anode. A power conversion efficiency of 10.3% has been obtained for a 1-cm2cell with 0.35-µm long SiNRs. The high efficiency and simple solution process used suggest that such devices are promising for developing low cost and high efficiency SiNRs/organic solar cells.Keywords
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