Optical properties of quantum dots layers: Application to photovoltaic solar cells

Hung-Ju Lin (1) , Sylvain Vedraine (2) , Judikaël Le Rouzo (1) , Sheng-Hui Chen (3) , François Flory (1) , Cheng-Chung Lee (3)

1 OptoPV
2 Equipe Optoélectronique et Photovoltaïque
3 Thin Film Technology Center

Hybrid optical layers of PMMA containing different concentrations of CdSe/ZnS core/shell semiconductor quantum dots were fabricated. Their absorption and luminescence showing quantum confinement effects are given. A frequency down-conversion is then obtained. The external quantum efficiency measurement performed on silicon solar cell with and without the down-conversion layers shows that the luminescence induces new charge generation. In addition, Finite Difference Time Domain (FDTD) simulation of organic solar cell shows that, added to the frequency conversion effect, one can expect to have an increase in light confinement when quantum dots are embedded in the active layer.

Mots clés: Semiconductor quantum dots; PMMA; Photoluminescence; Frequency down-conversion; FDTD

Domaines: Matériaux; Optique / photonique

Hung-Ju Lin, Sylvain Vedraine, Judikaël Le Rouzo, Sheng-Hui Chen, François Flory, et al.. Optical properties of quantum dots layers: Application to photovoltaic solar cells. Solar Energy Materials and Solar Cells, 2013, 117, pp.652-656. ⟨10.1016/j.solmat.2012.12.005⟩. ⟨hal-00911155⟩