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