Stokes-shift engineered CdSe/CdS/Cd1-xZnxSe1-ySy nanoplatelets with tunable emission wavelength

Jee, Seungin; Jung, Jaehan

doi:10.1016/j.tsf.2022.139203

Cited by 3 publications

(3 citation statements)

References 23 publications

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“…The increased Stokes shift implies a reduced overlap between the absorption and emission peaks, resulting in a decrease in photon self-absorption [1][2][3]. In other words, the intensity of photon self-absorption in the material, denoted by φ, is negatively correlated with the Stokes shift, S. This feature endows the WWH structure with polarization insensitivity, further positioning it for potential applications in various polarization-insensitive devices such as SOA and electro-absorption modulators, etc.…”

Section: Stokes Shifts and Mechanism Analysismentioning

confidence: 99%

“…Among the physical properties, Stokes shift is an important one relating to emission and absorption of light-emitting diodes. It reflects photon selfabsorption situation and affects the device performance [1][2][3]. * Author to whom any correspondence should be addressed.…”

Section: Introductionmentioning

confidence: 99%

“…In theory, increasing Stokes shift of the quantum structure can reduce the photon self-absorption and thus improve the device performance [1][2][3]. For example, if the difference of Stokes shifts or photon self-absorptions between the transverse electric (TE) and the transverse magnetic (TM) polarization modes can be reduced in a quantum structure, the optical output characteristics of the device with such a quantum structure will be insensitive to the polarization.…”

Section: Introductionmentioning

confidence: 99%

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Absorption loss properties and Stokes shifts of InGaAs-based self-assembled well-wire-hybrid quantum structures

Duan,

Wang,

Tai

et al. 2024

J. Phys. D: Appl. Phys.

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Stokes shift is an important physical property relating to emission and absorption of light-emitting diodes, which reflects photon self-absorption situation and affects the device performance. Nowadays, it is becoming more and more difficult to change Stokes shift and relevant physical properties to further improve device performance with traditional quantum structures from increasing requirements in application. Therefore, hybrid quantum structures have attracted an attention recently. However, the properties related to Stokes shift in the new configurations have not been revealed so far. In this paper, we investigate the absorption loss and Stokes shift of the newly proposed InGaAs self-assembled well-wire-hybrid quantum structure. By designing a new absorption loss measurement approach, we can conveniently extract internal optical mode loss of a quantum structure and explore its Stokes shift with the measured absorption spectra. Our findings reveal that the presence of quantum wires in the structure can significantly reduce the Stokes shift difference between transverse electric (TE) and transverse magnetic (TM) polarizations from 66.7% for a traditional quantum well to 15.4%. It suggests the potential for the reduction of TM-mode photon self-absorption in a compressive-strain quantum structure. This phenomenon offers new prospects for the development of polarization-insensitive devices.

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Section: Stokes Shifts and Mechanism Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%