Opt Express. 2022 May 9;30(10):16644-16654. doi: 10.1364/OE.454655.
We demonstrated an organic upconversion device (UCD) successfully converted input NIR light (850-1310 nm) into 524 nm green emission. The UCD under 980 nm light irradiation exhibits a high photon to photon conversion efficiency of 12%. In addition, the linear dynamic range reaches 72.1 dB and the maximum on/off ratio of luminance reaches 4.4×10, which guarantee the clarity of imaging from 850 to 1310 nm. The UCD in this work has the characteristics of high efficiency and long wavelengths detection, and it makes some senses for long wavelengths NIR bio-imaging in further researches.
我们成功展示了一种有机上转换器件（UCD），它可以将输入的近红外光（850-1310nm）转换为 524nm 的绿光发射。在 980nm 光照射下，UCD 的光子到光子转换效率高达 12%。此外，线性动态范围达到 72.1dB，亮度的最大开/关比达到 4.4×10，保证了 850-1310nm 范围内成像的清晰度。这项工作中的 UCD 具有高效率和长波长检测的特点，这对进一步的长波长近红外生物成像研究具有一定意义。
