Nanoscale characterisation of hybrid photovoltaic cells based on C61 capped CdSe QDs

Electron Microscopy and Analysis Group Conference 2013

Cacovich, S.^1 ; Divitini, G.^2 ; Capria, E.^3 ; Morgera, A. Fraleoni^3 ; Lughi, V.^1 ; Ducati, C.^2

Department of Engineering and Information Science, University of Trieste, via Valerio 6/a, 34127 Trieste, Italy^1

Department of Materials Science and Metallurgy, University of Cambridge, Cambridge CB3 0FS, United Kingdom^2

Elettra-Sincrotrone Trieste SCpA-SS, 14.5 km 163.5, 34149 Basovizza (TS), Italy^3

关键词: CdSe quantum dots;    Focused ion beam milling;    High-angle annular dark-field imaging;    Hybrid photovoltaic cells;    Hybrid solar cells;    Morphology and crystal structures;    Photovoltaic devices;    Poly-3-hexylthiophene;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/522/1/012071/pdf
DOI  :  10.1088/1742-6596/522/1/012071

来源: IOP

【 摘 要 】

Hybrid solar cells based on 1,2 methanofullerene (C61) capped CdSe and poly (3-hexylthiophene) (P3HT) were been investigated through a range of techniques. High resolution transmission electron microscopy (HRTEM) was used to characterize size, morphology and crystal structure of as-grown and C61-capped CdSe quantum dots. Cross sectional lamellar specimens were prepared from full photovoltaic devices using a focused ion beam milling approach. The sections were analysed by high angle annular dark field imaging in scanning TEM mode to determine the morphology of the device, in particular the intermixing of P3HT and capped quantum dots.