Journal
ACS PHOTONICS
Volume 9, Issue 5, Pages 1748-1756Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsphotonics.2c00149
Keywords
near-field thermal radiation; wave interference; Schottky diode
Categories
Funding
- National Research Foundation of Korea - Ministry of Science and ICT [NRF-2019R1A2C2003605, NRF-2020R1A4A4078930, NRF-2022R1C1C2008309]
Ask authors/readers for more resources
This study demonstrates the oscillatory nature of near-field thermophotovoltaic energy conversion in the transition between the far-field and near-field regimes. It is found that the same amount of photocurrent can be generated at different vacuum gaps, which is 10% larger than the far-field value.
Recent experimental studies on near-field thermophotovoltaic energy conversion have mainly focused on improvingperformance via photon tunneling of evanescent waves. In the sub-micron gap, however, there exist peculiar phenomena induced bythe interference of propagating waves, which are seldom observed in the full spectrum radiation due to the massive increase inevanescent modes. Here, we experimentally demonstrate the oscillatory nature of near-field thermophotovoltaic energy conversion inthe far-to-near-field transition regime (250-2600 nm), where evanescent and propagating modes are comparable due to the selectivespectral response by the photovoltaic cell. Noticeably, we show that the same amount of photocurrent can be generated at differentvacuum gaps of 870 and 322 nm, which is 10% larger than the far-field value.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available