Unlocking the Full Potential of Polymer-Based Solid-State Photon Upconversion
Unlocking the Full Potential of Polymer-Based Solid-State Photon Upconversion
复制标题
释放聚合物固态光子上转换的全部潜力
DOI：
10.1149/2162-8777/acab84
复制
发表时间：
2022
影响因子：
2.2
通讯作者：
Tamai Yasunari
中科院分区：
文献类型：
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作者：
Sakamoto Yuji;Tamai Yasunari
为了获得基于聚合物的固态光子上转换（UC）器件的全部潜力，我们研究了荧光聚合物的分子量对UC效率的影响。使用高分子量聚合物，实现了11.2 ms的长三重态寿命，这导致了67 mW cm− 2的特征阈值强度，大大低于先前报道的基于聚合物的UC器件。此外，我们的UC器件的外量子效率高达10.35%。因此，具有长三重态寿命的荧光共轭聚合物可以作为有效的固态UC器件的有吸引力的候选者。
To harvest the full potential of polymer-based solid-state photon upconversion (UC) devices, we examined the effect of the molecular weight of a fluorescent polymer on the UC efficiency. With a high-molecular-weight polymer, a long triplet lifetime of 11.2 ms was achieved, which led to a characteristic threshold intensity of 67 mW cm− 2, considerably lower than those of previously reported polymer-based UC devices. Furthermore, the external quantum efficiency of our UC device was as high as∼ 0.35%. Consequently, fluorescent conjugated polymers with long triplet lifetimes can serve as attractive candidates for efficient solid-state UC devices.