Self-doped metal chalcogenide colloidal quantum dots exhibiting mid-IR intraband transitions

Jin Hyeok Lee; Dongsun Choi; Hyeong Seok Kang; Kwang Seob Jeong

doi:10.1117/12.3026959

30 September 2024 Self-doped metal chalcogenide colloidal quantum dots exhibiting mid-IR intraband transitions

Jin Hyeok Lee, Dongsun Choi, Hyeong Seok Kang, Kwang Seob Jeong

Author Affiliations +

Proceedings Volume 13127, Physical Chemistry of Semiconductor Materials and Interfaces XXIII; 1312702 (2024) https://doi.org/10.1117/12.3026959
Event: Organic Photonics + Electronics, 2024, San Diego, California, United States

Abstract

Colloidal quantum dots (CQDs) are excellent semiconductor materials with unique properties, such as tunable electronic transitions achieved by exploiting the confinement effect and transition selectivity. Due to the wide spectral window realized by varying the size of the materials, CQDs have been intensively used for various applications, including displays, photovoltaics, bioimaging, etc. When an exciton is created in the CQD under photoexcitation, the electron and hole lie in the conduction and valence bands, respectively. Studying the separate dynamics of each charge carrier is critical but challenging. Here, we present the steady-state intraband transition, the unique optical property of self-doped quantum dots, and the methods to control the self-doping density of CQDs with direct and indirect methods.

Conference Presentation

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Jin Hyeok Lee, Dongsun Choi, Hyeong Seok Kang, and Kwang Seob Jeong "Self-doped metal chalcogenide colloidal quantum dots exhibiting mid-IR intraband transitions", Proc. SPIE 13127, Physical Chemistry of Semiconductor Materials and Interfaces XXIII, 1312702 (30 September 2024); https://doi.org/10.1117/12.3026959

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