PHOTOSENSITIVITY OF PbS COLLOIDAL QUANTUM DOTS BASED NANOSTRUCTURES WITH AN ENERGY BARRIER

V. S. Popov; Попов В. С.; V. V. Ivanov; Иванов В. В.; P. V. Arsenov; Арсенов П. В.; A. V. Katsaba; Кацаба А. В.; E. V. Mirofyanchenko; Мирофянченко Е. В.; A. E. Mirofyanchenko; Мирофянченко А. Е.; V. U. Gak; Гак В. Ю.; N. A. Lavrentiev; Лаврентьев Н. А.; S. B. Brichkin; Бричкин С. Б.; A. V. Gadomska; Гадомская А. В.; I. A. Shuklov; Шуклов И. А.; D. V. Dymkin; Демкин Д. В.; V. P. Ponomarenko; Пономаренко В. П.; V. F. Razumov; Разумов В. Ф.

doi:10.31857/S2686740023040120

PHOTOSENSITIVITY OF PbS COLLOIDAL QUANTUM DOTS BASED NANOSTRUCTURES WITH AN ENERGY BARRIER

作者: Popov V.¹^,2, Ivanov V.², Arsenov P.², Katsaba A.², Mirofyanchenko E.¹, Mirofyanchenko A.¹, Gak V.²^,3, Lavrentiev N.¹^,2, Brichkin S.²^,3, Gadomska A.²^,3, Shuklov I.², Dymkin D.², Ponomarenko V.¹^,2, Razumov V.²^,3
隶属关系:
1. Enterprise “RD&P Center “Orion”, Russian Federation State Research Center
2. Moscow Institute of Physics and Technology (National Research University)
3. Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry, Russian Academy of Sciences
期: 卷 511, 编号 1 (2023)
页面: 78-82
栏目: ТЕХНИЧЕСКИЕ НАУКИ
URL: https://journals.rcsi.science/2686-7400/article/view/135950
DOI: https://doi.org/10.31857/S2686740023040120
EDN: https://elibrary.ru/UMQVYU
ID: 135950

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A new architecture of photosensitive elements for the near (0.7–1.4 μm) and short-wavelength (1.4–3.0 μm) infrared regions of the spectrum based on hybrid nanostructures consisting of PbS colloidal quantum dots and functional layers of ZnO and AgNW silver nanowires is proposed. Small-sized (12 × 12 μm) photosensitive elements with an energy barrier at the contact between layers of n- and p-type CQDs have been studied. The current-voltage characteristics, spectral dependences of optical absorption and relative spectral photosensitivity of S_i(λ)/S_i(λ_max) barrier structures at room temperature have been studied. It is shown that the proposed architecture of barrier structures provides photosensitivity in a wide spectral range from 0.4 µm to 2.0 µm. An excess of the average value of the relative spectral sensitivity S_i(λ)/S_i(λ_max) about 1.5 times compared to those previously observed in the wavelength range of 0.9–1.85 μm for barrier nanostructures from PbS CQDs was found.

关键词

quantum dot, optical absorption, photosensor, energy barrier

参考

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