Figure 1. Image of photon upconversion using a developed crystal through triplet-triplet annihilation (IMAGE)

Tokyo Institute of Technology

Figure 1. Image of photon upconversion using a developed crystal through triplet-triplet annihilation

Caption

The sensitizer molecules (green) absorb low energy photons (long-wavelength light) and become excited into triplet states. These triplet states are then transferred to nearby annihilator molecules (blue), which then pass them around throughout the crystalline array of the annihilator. If two traveling triplet states meet at a single annihilator molecule, the combined excess energy produces a higher energy photon (shorter wavelength light).

Credit

Image credits: Yoichi Murakami from Tokyo Tech

Usage Restrictions

Credit must be given to the creator.

License

CC BY

Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.