Hu Yu, Luo Guiwen, Niu Pengfei, Zhang Ling, Yu Tianjun, Chen Jinping, Li Yi, Zeng Yi
Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
University of Chinese Academy of Sciences, Beijing 100049, China.
Molecules. 2025 May 22;30(11):2273. doi: 10.3390/molecules30112273.
Coupling organic light-harvesting materials with lead halide perovskite quantum dots (LHP QDs) is an attractive approach that could provide great potential in optoelectronic applications owing to the diversity of organic materials available and the intriguing optical and electronic properties of LHP QDs. Here, we demonstrate energy collection by CsPbI QDs from a near-infrared (NIR) light-harvesting upconversion system. The upconversion system consists of Pd-tetrakis-5,10,15,20-(p-methoxycarbonylphenyl)-tetraanthraporphyrin (PdTAP) as the sensitizer to harvest NIR photons and rubrene as the annihilator to generate upconverted photons via triplet fusion. Steady-state and time-resolved photoluminescence spectra reveal that CsPbI QDs are energized via radiative energy transfer from the singlet excited rubrene with photophysics fidelity of respective components. In addition, a volumetric display demo incorporating CsPbI QDs as light emitters employing triplet fusion upconversion was developed, showing bright luminescent images from CsPbI QDs. These results present the feasibility of integrating organic light-harvesting systems and perovskite QDs, enabling diverse light harvesting and activation of perovskite materials for optoelectronic applications.
将有机光捕获材料与卤化铅钙钛矿量子点（LHP QDs）耦合是一种很有吸引力的方法，由于可用有机材料的多样性以及LHP QDs有趣的光学和电子特性，该方法在光电应用中具有巨大潜力。在此，我们展示了CsPbI量子点从近红外（NIR）光捕获上转换系统中收集能量的过程。该上转换系统由作为敏化剂以捕获近红外光子的钯 - 四 - 5,10,15,20 -（对 - 甲氧基羰基苯基） - 四蒽卟啉（PdTAP）和作为湮灭剂通过三线态融合产生上转换光子的红荧烯组成。稳态和时间分辨光致发光光谱表明，CsPbI量子点通过来自单线态激发红荧烯的辐射能量转移而被激发，且各组分具有光物理保真度。此外，还开发了一个体积显示演示，该演示将CsPbI量子点用作采用三线态融合上转换的发光体，展示了来自CsPbI量子点的明亮发光图像。这些结果表明了整合有机光捕获系统和钙钛矿量子点的可行性，能够实现多种光捕获并激活用于光电应用的钙钛矿材料。
