Nearly perfect triplet-triplet energy transfer from wannier excitons to naphthalene in organic-inorganic hybrid quantum-well materials
Nearly perfect triplet-triplet energy transfer from wannier excitons to naphthalene in organic-inorganic hybrid quantum-well materials
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DOI：
10.1103/physrevlett.100.257401
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发表时间：
2008-06-27
影响因子：
8.6
通讯作者：
Kunugita, H.
中科院分区：
文献类型：
--
作者：
Ema, K.;Inomata, M.;Kunugita, H.
我们观察到了由钙钛矿型溴化铅势垒层和萘连接的氨势垒层组成的有机-无机杂化量子阱结构中非常有效的能量转移(大于99%)。时间分辨光致发光测量证实，这是从无机势垒中的Wannier激子到有机势垒中的萘分子的三重态的三重-三重右旋能量转移。利用在10-300K温度范围内的测量，我们还研究了能量传递的温度依赖性。
We report the observation of extremely efficient energy transfer (greater than 99%) in an organic-inorganic hybrid quantum-well structure consisting of perovskite-type lead bromide well layers and naphthalene-linked ammonium barrier layers. Time-resolved photoluminescence measurements confirm that the transfer is triplet-triplet Dexter-type energy transfer from Wannier excitons in the inorganic well to the triplet state of naphthalene molecules in the organic barrier. Using measurements in the 10-300 K temperature range, we also investigated the temperature dependence of the energy transfer.