Fabrication and characterization of nanorod solar cells with an ultrathin a-Si:H absorber layer
| Autor: | Kuang, Y., van der Werf, C.H.M., Houweling, Z.S., Di Vece, M., Schropp, R.E.I., Nanophotonics, Physics research: Debye Institute for Nanomaterials Science, Afd Nanophotonics, Dep Natuurkunde, Sub Physics of devices begr 1/1/17 |
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| Přispěvatelé: | Nanophotonics, Physics research: Debye Institute for Nanomaterials Science, Afd Nanophotonics, Dep Natuurkunde, Sub Physics of devices begr 1/1/17 |
| Jazyk: | angličtina |
| Rok vydání: | 2011 |
| Předmět: |
Materials science
Silicon business.industry Energy conversion efficiency chemistry.chemical_element Substrate (electronics) Condensed Matter Physics Electronic Optical and Magnetic Materials Amorphous solid law.invention chemistry law Solar cell Materials Chemistry Ceramics and Composites Optoelectronics Nanorod Quantum efficiency Thin film business |
| Zdroj: | Journal of Non-Crystalline Solids. Elsevier |
| ISSN: | 0022-3093 |
| DOI: | 10.1016/j.jnoncrysol.2011.11.021 |
| Popis: | In this paper, we present a three-dimensional nanorod solar cell design. As the backbone of the nanorod device, density-controlled zinc oxide (ZnO) nanorods were synthesized by a simple aqueous solution growth technique at 80 °C on ZnO thin film pre-coated glass substrate. The as-prepared ZnO nanorods were coated by an amorphous hydrogenated silicon (a-Si:H) light absorber layer to form a nanorod solar cell. The light management, current–voltage characteristics and corresponding external quantum efficiency of the solar cells were investigated. An energy conversion efficiency of 3.9% was achieved for the nanorod solar cells with an a-Si:H absorber layer thickness of 75 nm, which is significantly higher than the 2.6% and the 3.0% obtained for cells with the same a-Si:H absorber layer thickness on planar ZnO and on textured SnO2:F counterparts, respectively. A short-circuit current density of 11.6 mA/cm2 and correspondingly, a broad external quantum efficiency profile were achieved for the nanorod device. An absorbed light fraction higher than 80% in the wavelength range of 375–675 nm was also demonstrated for the nanorod solar cells, including a peak value of ~ 90% at 520–530 nm. |
| Databáze: | OpenAIRE |
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