光致发光
量子点
光电子学
半导体
化学
发射光谱
谱线
纳米技术
材料科学
物理
量子力学
作者
Hao Nguyen,Grant Dixon,Florence Y. Dou,Shaun Gallagher,Stephen Gibbs,Dylan Ladd,Emanuele Marino,Justin C. Ondry,James P. Shanahan,Eugenia S. Vasileiadou,Stephen Barlow,Daniel R. Gamelin,David S. Ginger,David M. Jonas,Mercouri G. Kanatzidis,Seth R. Marder,Daniel G. Morton,Christopher B. Murray,Jonathan S. Owen,Dmitri V. Talapin,Michael F. Toney,Brandi M. Cossairt
出处
期刊:Chemical Reviews
[American Chemical Society]
日期:2023-06-13
卷期号:123 (12): 7890-7952
被引量:12
标识
DOI:10.1021/acs.chemrev.3c00097
摘要
Solution-processed semiconductors are in demand for present and next-generation optoelectronic technologies ranging from displays to quantum light sources because of their scalability and ease of integration into devices with diverse form factors. One of the central requirements for semiconductors used in these applications is a narrow photoluminescence (PL) line width. Narrow emission line widths are needed to ensure both color and single-photon purity, raising the question of what design rules are needed to obtain narrow emission from semiconductors made in solution. In this review, we first examine the requirements for colloidal emitters for a variety of applications including light-emitting diodes, photodetectors, lasers, and quantum information science. Next, we will delve into the sources of spectral broadening, including "homogeneous" broadening from dynamical broadening mechanisms in single-particle spectra, heterogeneous broadening from static structural differences in ensemble spectra, and spectral diffusion. Then, we compare the current state of the art in terms of emission line width for a variety of colloidal materials including II-VI quantum dots (QDs) and nanoplatelets, III-V QDs, alloyed QDs, metal-halide perovskites including nanocrystals and 2D structures, doped nanocrystals, and, finally, as a point of comparison, organic molecules. We end with some conclusions and connections, including an outline of promising paths forward.
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