Abstract
We investigated the characteristics of inverted solar cells comprising bulk-heterojunction active layers of ZnO nanowire arrays and poly(3-hexylthiophene), P3HT. By utilizing a sputtered ZnO seed layer, we are able to grow vertically oriented ZnO nanowire arrays homoepitaxially. Unlike the ZnO nanowires that are grown on sol-gel derived seed layers, our nanowires are more uniform in their dimensions and spatial distribution. This sputtered seed layer also acts as the hole-blocking layer when these nanowire arrays are incorporated in solar cells; hybrid solar cells comprising these nanowires and P3HT exhibit power conversion efficiencies of 1.6%. To date, this is the highest efficiency observed for ZnO nanowire arrays:P3HT hybrid solar cells.
Original language | English (US) |
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Pages (from-to) | 3477-3483 |
Number of pages | 7 |
Journal | Organic Electronics |
Volume | 14 |
Issue number | 12 |
DOIs | |
State | Published - 2013 |
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Biomaterials
- General Chemistry
- Condensed Matter Physics
- Materials Chemistry
- Electrical and Electronic Engineering
Keywords
- Hybrid solar cells
- Sputtered seed layer
- Uniform nanowire growth
- ZnO nanowire arrays