More stable hybrid organic solar cells deposited on amorphous Si electron transfer layer

We report on defect densities, performance, and stability of organic/inorganic hybrid solar cells produced using n-doped inorganic amorphous silicon-carbide layers as the electron transport layer (ETL). The organic material was poly-3-hexyl-thiophene (P3HT) and heterojunction was formed using phenyl...

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Bibliographic Details
Published in:Applied physics letters 2014-05, Vol.104 (21)
Main Authors: Samiee, Mehran, Modtland, Brian, Aidarkhanov, Damir, Dalal, Vikram L.
Format: Article
Language:English
Subjects:
Amorphous materials
Amorphous silicon
Applied physics
BUTYRIC ACID
CESIUM CARBONATES
CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
CRYSTAL DEFECTS
DOPED MATERIALS
ELECTRON TRANSFER
Electron transport
HETEROJUNCTIONS
ILLUMINANCE
LAYERS
Organic chemistry
ORGANIC SOLAR CELLS
Photovoltaic cells
POLYCYCLIC SULFUR HETEROCYCLES
QUANTUM EFFICIENCY
Silicon carbide
SILICON CARBIDES
Solar cells
STABILITY
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Summary:We report on defect densities, performance, and stability of organic/inorganic hybrid solar cells produced using n-doped inorganic amorphous silicon-carbide layers as the electron transport layer (ETL). The organic material was poly-3-hexyl-thiophene (P3HT) and heterojunction was formed using phenyl-C71-Butyric-Acid-Methyl Ester (PCBM). For comparison, inverted solar cells fabricated using Cs2CO3 as ETL were fabricated. Defect densities and subgap quantum efficiency curves were found to be nearly identical for both types of cells. The cells were subjected to 2xsun illumination and it was found that the cells produced using doped a-Si as ETL were much more stable than the cells produced using Cs2CO3.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.4878405