Abstract
Proper contact and band alignment across the heterojunction interface is critical to the performance of hybrid pi-conjugated polymer-nanostructured metal oxide photovoltaic devices. We investigated the effect of ZnO surface processing on ZnO/poly(3-hexylthiolphene) device performance. Devices in which the ZnO films/ nanorods were heated at 150°C in air exhibited an open circuit voltage ~200 mV higher than devices with ZnO treated by UV/ozone. We conclude that the differences observed in the two types of devices predominantly arise from changes in interfacial dipoles, and intermediate materials processing can be critical to solar cell performance.
Original language | American English |
---|---|
Pages (from-to) | 9544-9547 |
Number of pages | 4 |
Journal | Journal of Physical Chemistry C |
Volume | 112 |
Issue number | 26 |
DOIs | |
State | Published - 2008 |
NREL Publication Number
- NREL/JA-520-44081
Keywords
- materials science
- solar cells