Experimental demonstration of photon upconversion via cooperative energy pooling
| Autor: | Sean E. Shaheen, Daniel H. Weingarten, Michael D. LaCount, Garry Rumbles, Jao van de Lagemaat, Mark T. Lusk |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Materials science
Science Pooling General Physics and Astronomy 02 engineering and technology 010402 general chemistry 01 natural sciences 7. Clean energy Two-photon absorption Article General Biochemistry Genetics and Molecular Biology Multidisciplinary business.industry Nonlinear optics General Chemistry 021001 nanoscience & nanotechnology Acceptor Photon upconversion 0104 chemical sciences Optoelectronics 0210 nano-technology business Energy (signal processing) Excitation Microfabrication |
| Zdroj: | Nature Communications, Vol 8, Iss 1, Pp 1-7 (2017) Nature Communications |
| ISSN: | 2041-1723 |
| Popis: | Photon upconversion is a fundamental interaction of light and matter that has applications in fields ranging from bioimaging to microfabrication. However, all photon upconversion methods demonstrated thus far involve challenging aspects, including requirements of high excitation intensities, degradation in ambient air, requirements of exotic materials or phases, or involvement of inherent energy loss processes. Here we experimentally demonstrate a mechanism of photon upconversion in a thin film, binary mixture of organic chromophores that provides a pathway to overcoming the aforementioned disadvantages. This singlet-based process, called Cooperative Energy Pooling (CEP), utilizes a sensitizer-acceptor design in which multiple photoexcited sensitizers resonantly and simultaneously transfer their energies to a higher-energy state on a single acceptor. Data from this proof-of-concept implementation is fit by a proposed model of the CEP process. Design guidelines are presented to facilitate further research and development of more optimized CEP systems. Photon upconversion methods demonstrated thus far involve challenging requirements. Here Weingarten et al. demonstrate a mechanism called cooperative energy pooling, in which multiple photoexcited sensitizers resonantly and simultaneously transfer their energies to a higher-energy state on a single acceptor. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|