Increasing Photon Upconversion Efficiency with Structural Exciton Localization
If the energy of such wavelengths could be coaxed into this useful spectrum, this could then correspondingly boost the performance of the devices, but doing so is not straightforward. Going from lower-energy photons to higher-energy photons is very inefficient, with a recent study by [Thilini Ishwara] et al. demonstrating a liquid triplet medium that has a conversion efficiency of about 8.2%. This is practical in luminescent displays and anti-counterfeiting measures, where details like conversion efficiency aren’t paramount.
- ▪If the energy of such wavelengths could be coaxed into this useful spectrum, this could then correspondingly boost the performance of the devices, but doing so is not straightforward.
- ▪Going from lower-energy photons to higher-energy photons is very inefficient, with a recent study by [Thilini Ishwara] et al. demonstrating a liquid triplet medium that has a conversion efficiency of about 8.2%.
- ▪This is practical in luminescent displays and anti-counterfeiting measures, where details like conversion efficiency aren’t paramount.
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| Original publisher | Hackaday |
| Canonical URL | https://hackaday.com/2026/06/25/increasing-photon-upconversion-efficiency-with-structural-exciton-localization/ |
| Publication time | Fri, 26 Jun 2026 02:00:19 +0000 |
| Retrieval time | 2026-06-26T02:04:29.536Z |
| Last seen | 2026-06-26T02:04:29.536Z |
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Opening excerpt (first ~120 words) tap to expand
Increasing Photon Upconversion Efficiency With Structural Exciton Localization No comments by: Maya Posch June 25, 2026 Title: Copy Short Link: Copy In structures like photovoltaic cells there is only a limited spectrum of wavelengths that can perform useful work, with the remaining wavelengths of electromagnetic radiation effectively wasted. If the energy of such wavelengths could be coaxed into this useful spectrum, this could then correspondingly boost the performance of the devices, but doing so is not straightforward. Going from lower-energy photons to higher-energy photons is very inefficient, with a recent study by [Thilini Ishwara] et al. demonstrating a liquid triplet medium that has a conversion efficiency of about 8.2%.
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Excerpt limited to ~120 words for fair-use compliance. The full article is at Hackaday.
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