Abstract

Subject of study. The dependence of the photoluminescence of a flexible film structure, which is an array of InP/InAsP/InP nanowires incorporated into a polymerized trioctylphosphine oxide layer with CdSe/ZnS colloidal quantum dots, on the intensity of excitation in the near-infrared range at room temperature was investigated in this study. Method. Nanowires were synthesized on a Si (III) substrate by molecular beam epitaxy using a Riber Compact 21 setup. A polymerized film formed after application of a colloidal solution of trioctylphosphine oxide and CdSe/ZnS quantum dots in toluene on the substrate. This film could be easily detached from the substrate. A continuous Nd⁺³:yttrium lithium fluoride laser with a wavelength of 527 nm acted as an excitation source in spectral measurements. The emission power varied in the range of 15–100 mW. Main results. A method for fabrication of a flexible film structure comprising an array of semiconductor nanowires and colloidal quantum dots was demonstrated. A nonlinear dependence of the photoluminescence intensity on the intensity of exciting radiation was obtained. It was attributed to the light quenching effect. A mechanism for the increase in the photoluminescence intensity in the film structure is proposed. Practical significance. Considering the position of the maximum in the photoluminescence band in the vicinity of 1.3 µm, the proposed film heterostructure can be advantageous for integration with fiber-optic systems.

© 2022 Optica Publishing Group

Effect of disorders on the optical properties of excitons in InAsP/InP quantum wells investigated by magneto-photoluminescence spectroscopy

Geetanjali Vashisht, V. K. Dixit, S. Haldar, and T. K. Sharma
J. Opt. Soc. Am. B 35(10) 2405-2411 (2018)

Axial InAs(Sb) inserts in selective-area InAsP nanowires on InP for optoelectronics beyond 2.5 µm

Dingkun Ren, Alan C. Farrell, and Diana L. Huffaker
Opt. Mater. Express 8(4) 1075-1081 (2018)

Incorporation of luminescent CdSe/ZnS core-shell quantum dots and PbS quantum dots into solution-derived chalcogenide glass films

Spencer Novak, Luca Scarpantonio, Jacklyn Novak, Marta Dai Prè, Alessandro Martucci, Jonathan D. Musgraves, Nathan D. McClenaghan, and Kathleen Richardson
Opt. Mater. Express 3(6) 729-738 (2013)

Ultrafast carrier dynamics and nonlinear optical response of InAsP nanowires

Junting Liu, He Yang, Vladislav Khayrudinov, Harri Lipsanen, Hongkun Nie, Kejian Yang, Baitao Zhang, and Jingliang He
Photon. Res. 9(9) 1811-1819 (2021)

Microstructural and optical properties of CdSe/CdS/ZnS core-shell-shell quantum dots

Dea Uk Lee, Dae Hun Kim, Dong Hyuk Choi, Sang Wook Kim, Hong Seok Lee, Keon-Ho Yoo, and Tae Whan Kim
Opt. Express 24(2) A350-A357 (2016)