Quantum Emission Assisted by Energy Landscape Modification in Pentacene-Decorated Carbon Nanotubes
Quantum Emission Assisted by Energy Landscape Modification in Pentacene-Decorated Carbon Nanotubes
复制标题
并五苯修饰的碳纳米管中能量景观修饰辅助的量子发射
DOI：
10.1021/acsphotonics.1c00539
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发表时间：
2021
期刊：
影响因子：
7
通讯作者：
Kato Yuichiro K.
中科院分区：
文献类型：
--
作者：
Li Zhen;Otsuka Keigo;Yamashita Daiki;Kozawa Daichi;Kato Yuichiro K.
光致发光碳纳米管有望成为多功能单光子源，在量子信息处理中有应用。碳纳米管的量子发射通常由激子的局域化或激子-激子湮灭引起。在这里，我们修改本地能源景观的激子装饰纳米级并五苯颗粒到空气悬浮的单壁碳纳米管。定向激子从未修饰的区域到修饰的网站被证明，这表明激子捕获诱导的局部介电屏蔽并五苯颗粒。对具有代表性的碳纳米管的光致发光和光子相关测量揭示了在室温下增强的激子-激子湮灭和单光子发射。并五苯粒子被证明可以促进强光子反聚束在装饰网站，表明使用分子的非共价官能化可以是一种有效的方法，在碳纳米管的能量景观修改和量子发射。
Photoluminescent carbon nanotubes are expected to become versatile single-photon sources that have applications in quantum information processing. Quantum emission from carbon nanotubes is often induced by localization of excitons or exciton–exciton annihilation. Here, we modify the local energy landscape of excitons by decorating nanoscale pentacene particles onto air-suspended single-walled carbon nanotubes. Directional exciton transfer from the undecorated region to the decorated site is demonstrated, suggesting exciton trapping induced by local dielectric screening from pentacene particles. Photoluminescence and photon correlation measurements on a representative carbon nanotube reveal enhanced exciton–exciton annihilation and single-photon emission at room temperature. Pentacene particles are shown to promote strong photon antibunching at the decorated site, indicating that noncovalent functionalization using molecules can be an effective approach for energy landscape modification and quantum emission in carbon nanotubes.