Abstract
Photoelectric hot carrier generation in metal-semiconductor junctions can enable optical-to-electrical energy conversion at photon energies below the bandgap of the semiconductor. Here, we present the simulated and experimental results of our wafer-scale Au/TiO2 metallic-semiconductor photonic crystal (MSPhC). We demonstrate a broadband sub-bandgap photoresponse with a FWHM of 235 nm centered at 590 nm due to surface plasmon absorption, and we also show a photoresponse enhancement factor of 4.5 at 639 nm compared to a flat chip. Photoresponse is also shown to increase with decreasing metal thickness down to 13 nm. Applications of our results could lead to low-cost and robust photoelectrochemical and thermo-photovoltaic devices.
| Original language | British English |
|---|---|
| Title of host publication | 2015 IEEE 42nd Photovoltaic Specialist Conference, PVSC 2015 |
| Publisher | Institute of Electrical and Electronics Engineers Inc. |
| ISBN (Electronic) | 9781479979448 |
| DOIs | |
| State | Published - 14 Dec 2015 |
| Event | 42nd IEEE Photovoltaic Specialist Conference, PVSC 2015 - New Orleans, United States Duration: 14 Jun 2015 → 19 Jun 2015 |
Publication series
| Name | 2015 IEEE 42nd Photovoltaic Specialist Conference, PVSC 2015 |
|---|
Conference
| Conference | 42nd IEEE Photovoltaic Specialist Conference, PVSC 2015 |
|---|---|
| Country/Territory | United States |
| City | New Orleans |
| Period | 14/06/15 → 19/06/15 |
UN SDGs
This output contributes to the following UN Sustainable Development Goals (SDGs)
-
SDG 7 Affordable and Clean Energy
Keywords
- hot electrons
- photonic crystal
- photovoltaic cells
- sub-bandgap absorption
- surface plasmon
Fingerprint
Dive into the research topics of 'Broadband photoelectric hot carrier collection with wafer-scale metallic-semiconductor photonic crystals'. Together they form a unique fingerprint.Cite this
- APA
- Author
- BIBTEX
- Harvard
- Standard
- RIS
- Vancouver