Nanostructured Electron-Selective Interlayer for Efficient Inverted Organic Solar Cells.
ACS Appl Mater Interfaces
; 7(33): 18460-6, 2015 Aug 26.
Article
em En
| MEDLINE
| ID: mdl-26238224
ABSTRACT
We report a unique nanostructured electron-selective interlayer comprising of In-doped ZnO (ZnOIn) and vertically aligned CdSe tetrapods (TPs) for inverted polymerfullerene bulkheterojunction (BHJ) solar cells. With dimension-controlled CdSe TPs, the direct inorganic electron transport pathway is provided, resulting in the improvement of the short circuit current and fill factor of devices. We demonstrate that the enhancement is attributed to the roles of CdSe TPs that reduce the recombination losses between the active layer and buffer layer, improve the hole-blocking as well as electron-transporting properties, and simultaneously improve charge collection characteristics. As a result, the power conversion efficiency of PTB7PC70BM based solar cell with nanostructured CdSe TPs increases to 7.55%. We expect this approach can be extended to a general platform for improving charge extraction in organic solar cells.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Idioma:
En
Revista:
ACS Appl Mater Interfaces
Assunto da revista:
BIOTECNOLOGIA
/
ENGENHARIA BIOMEDICA
Ano de publicação:
2015
Tipo de documento:
Article