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 SnO 2:F counterparts, respectively. A short-circuit current density of 11.6 mA/cm 2 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.
Fabrication and characterization of nanorod solar cells with an ultrathin a-Si:H absorber layer / Y. Kuang, K.H.M. Van Der Werf, Z.S. Houweling, M. Di Vece, R.E.I. Schropp. - In: JOURNAL OF NON-CRYSTALLINE SOLIDS. - ISSN 0022-3093. - 358:17(2012), pp. 2209-2213. [10.1016/j.jnoncrysol.2011.11.021]
Fabrication and characterization of nanorod solar cells with an ultrathin a-Si:H absorber layer
M. Di VecePenultimo
;
2012
Abstract
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 SnO 2:F counterparts, respectively. A short-circuit current density of 11.6 mA/cm 2 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.Pubblicazioni consigliate
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.