量子ドットー有機分子複合系におけるアップコンバージョン機構に基づく太陽電池

基于量子点-有机分子复合体系上转换机制的太阳能电池

• 批准号: 19J14834
• 负责人: 張 傑
• 金额: $ 1.22万
• 依托单位: Kyoto University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for JSPS Fellows
• 财政年份: 2019
• 资助国家: 日本
• 起止时间: 2019-04-25 至 2021-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-19J14834/
• 关键词: Photon upconversion; Near infrared light; Quantum dot; Triplet energy transfer; Triplet annihilation; Quantum dots; Perylene

I established a triplet-triplet annihilation photon upconversion (TTA-UC) system based the composites of organic molecules and inorganic quantum dots (QDs). 5-(4-Carboxyphenyl)-10,15,20-triphenylporphyrin (TPP) molecules were assembled on the surface of PbS QDs for upconverting near infrared (NIR) into visible light. During UC process, PbS QDs are excited by a laser pulse and engages in interfacial triplet energy transfer to surface-attached TPP to generate TPP in the triplet excited state (TPP (T1)). Successive TTET then occurs from TPP (T1) to 2,5,8,11-tetra-tert-butylperylene (TTBP) molecules dissolved in the solution, which act as an annihilator. Then, two TTBP (T1) undergo TTA-UC to produce a singlet that emits a higher-energy photon.

我建立了一个基于有机分子和无机量子点复合物的三重态-三重态湮灭光子上转换（TTA-UC）系统。将5-（4-羧基苯基）-10，15，20-三苯基卟啉（TPP）分子组装到PbS量子点表面，实现了近红外（NIR）到可见光的上转换。在UC过程中，PbS量子点被激光脉冲激发，并参与界面三重态能量转移到表面附着的TPP，以产生三重激发态（TPP（T1））的TPP。然后从TPP（T1）到溶解在溶液中的2，5，8，11-四叔丁基二萘嵌苯（TTBP）分子发生连续的TTET，其充当零化子。然后，两个TTBP（T1）进行TTA-UC以产生发射更高能量光子的单线态。

项目成果

Number of Surface-Attached Acceptor Molecules on Quantum Dots Impacts Energy Transfer and Photon Upconversion Efficiencies

量子点表面附着的受体分子数量影响能量传输和光子上转换效率

• 发表时间: 2020
• 作者: Jie Zhang;Masanori Sakamoto;Hironori Kouno;Nobuhiro Yanai;Nobuo Kimizuka;Toshiharu Teranishi
• 通讯作者: Toshiharu Teranishi