Kurum Yazarı "Sahin, Mehmet" İçin Listeleme
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Antibacterial type-II InP/ZnO quantum dots via multimodal reactive oxygen species
Khan, Saad Ullah; Eren, Guncem Ozgun; Atac, Nazli; Onal, Asim; Qureshi, Mohammad Haroon; Cooper, Francis Korshe; Almammadov, Toghru; Kolemen, Safacan; Sahin, Mehmet; Can, Fusun; Nizamoglu, Sedat (ELSEVIER SCIENCE SA, 2024)The emergence of multidrug-resistant bacteria as a global health threat has necessitated the exploration of alternative treatments to combat bacterial infections. Among these, photocatalytic nanomaterials such as quantum ... -
Cadmium-Free and Efficient Type-II InP/ZnO/ZnS Quantum Dots and Their Application for LEDs
Eren, Guncem Ozgun; Sadeghi, Sadra; Jalali, Houman Bahmani; Ritter, Maximilian; Han, Mertcan; Baylam, Isinsu; Melikov, Rustamzhon; Onal, Asim; Oz, Fatma; Sahin, Mehmet; Ow-Yang, Cleva W.; Sennaroglu, Alphan; Lechner, Rainer T.; Nizamoglu, Sedat (AMER CHEMICAL SOC1155 16TH ST, NW, WASHINGTON, DC 20036, 2021)It is a generally accepted perspective that type-II nanocrystal quantum dots (QDs) have low quantum yield due to the separation of the electron and hole wavefunctions. Recently, high quantum yield levels were reported for ... -
A detailed investigation of electronic and intersubband optical properties of AlxGa(1-x)As/Al0.3Ga0.7As/AlyGa1-yAs/Al0.3Ga0.7As multi-shell quantum dots
Kavruk, Ahmet Emre); Sahin, Mehmet; Atav, Ulfet (IOP Publishing Ltd, 2014)In this study, we have investigated the electronic and intersubband optical properties of Al x Ga1-x As/Al0.3Ga0.7As/Al y Ga1-y As/Al0.3Ga0.7As multi-shell quantum dot heterostructures as a function of the Al doping ... -
A detailed investigation of electronic and optical properties of the exciton, the biexciton and charged excitons in a multi-shell quantum dot nanocrystal
Akturk, Abdurrahman; Sahin, Mehmet; Koc, Fatih; Erdinc, Ahmet (IOP Publishing Ltd, 2014)In the present study, the electronic and optical properties of the exciton (X), the biexciton (XX) and charged excitons (X- and X+) in a multi-shell quantum dot nanocrystal have been systematically explored in detail. The ... -
A detailed investigation of the electronic properties of a multi-layer spherical quantum dot with a parabolic confinement
Akgul, Selcuk; Koksal, Koray; Sahin, Mehmet (ELSEVIER, 2012)In this work, we aim a detailed investigation of the electronic properties of a spherical multi-layer quantum dot with and without a hydrogenic impurity. The structure is introduced in the form of core/ shell/well/shell ... -
Double Quantum Ring under an Intense Nonresonant Laser Field: Zeeman and Spin-Orbit Interaction Effects
Mora-Ramos, Miguel E.; Vinasco, Juan A.; Radu, Adrian; Restrepo, Ricardo L.; Morales, Alvaro L.; Sahin, Mehmet; Mommadi, Omar; Sierra-Ortega, Jose; Escorcia-Salas, Gene Elizabeth; Heyn, Christian; Duque, Derfrey A.; Duque, Carlos A. (MDPI, 2023)We theoretically investigate the properties of an electron energy spectrum in a double GaAs-Al0.3Ga0.7As quantum ring by using the effective mass and adiabatic approximations, together with a realistic description of the ... -
Effect of a buffer layer between the shell and ligand on the optical properties of an exciton and biexciton in type-II quantum dot nanocrystals
Koc, Fatih; Koksal, Koray; Sahin, Mehmet (TAYLOR & FRANCIS LTD2-4 PARK SQUARE, MILTON PARK, ABINGDON OR14 4RN, OXON, ENGLAND, 2017)In this study, we have investigated the effect of the buffer layers on the electronic and optical properties of an exciton (X) and a biexciton (XX) in a type-II CdTe/CdSe quantum dot nanocrystal. In an experimental study, ... -
The effect of dilute nitrogen on nonlinear optical properties of the InGaAsN/GaAs single quantum wells
Sahin, Mehmet; Koksal, Koray (SPRINGER, 2012)In this study, we investigate the linear and third order nonlinear optical properties of InGaAsN/GaAs depending on nitrogen content and laser dressing parameter. As theoretical models, band anticrossing and model solid ... -
The electronic and optical properties of a triexciton in CdSe/ZnS core/shell quantum dot nanocrystals
Akturk, Abdurrahman; Tas, Hatice; Koksal, Koray; Sahin, Mehmet (TAYLOR & FRANCIS LTD2-4 PARK SQUARE, MILTON PARK, ABINGDON OR14 4RN, OXON, ENGLAND, 2016)In the study, we aim to investigate the electronic and optical properties of single excitons, biexcions and triexcitons in a CdSe/ZnS core/shell quantum dot nanocrystal. The electronic structure has been determined by ... -
Electronic and optical properties of single excitons and biexcitons in type-II quantum dot nanocrystals
Koc, Fatih; Sahin, Mehmet (AIP Publishing, 2014)In this study, a detailed investigation of the electronic and optical properties (i.e., binding energies, absorption wavelength, overlap of the electron-hole wave functions, recombination oscillator strength, etc.) of an ... -
The electronic properties of a two-electron multi-shell quantum dot-quantum well heterostructure
Aydin, Rasit; Sahin, Mehmet (AIP Publishing, 2013)A detailed investigation of the electronic properties of a double electron in a core/shell/well/shell quantum dot heterostructure has been systematically studied for cases with and without an on-center donor impurity. For ... -
Elliptical Quantum Rings with Variable Heights and under Spin-Orbit Interactions
Mora-Ramos, Miguel E.; Vinasco, Juan A; Radu, A.; Restrepo, Ricardo L.; Morales, Alvaro L.; Sahin, Mehmet; Mommadi, Omar; Sierra-Ortega, Jose; Escorcia-Salas, Gene Elizabeth; Duque, Carlos A. (MDPI, 2023)We investigate the electronic properties of a semiconductor quantum ring with an elliptical shape and non-uniform height, allowing for distributed quantum-dot-like bulges along its perimeter. The adiabatic approximation ... -
The intersubband optical properties of a two-electron quantum dot-quantum well heterostructure
Aydin, Rasit; Tas, Hatice; Sahin, Mehmet (ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD, 2015)In this paper, both linear and third-order nonlinear optical properties of two-electron in a semiconductor core/shell/well/shell quantum dot (QD) heterostructure for cases with and without a hydrogenic donor impurity ... -
Linear and nonlinear optical properties of GaAs/Al(x)Ga1-xAs/GaAs/Al(y)Ga1-yAs multi-shell spherical quantum dot
Kavruk, Ahmet Emre; Sahin, Mehmet; Koc, Fatih (AIP Publishing, 2013)In this work, the optical properties of GaAs/AlxGa1-xAs/GaAs/AlyGa1-yAs multi-shell quantum dot heterostructure have been studied as a function of Al doping concentrations for cases with and without a hydrogenic donor atom. ... -
The linear optical properties of a multi-shell spherical quantum dot of a parabolic confinement for cases with and without a hydrogenic impurity
Sahin, Mehmet; Koksal, Koray (IOP Publishing Ltd, 2012)Throughout this work, we aim to explore the linear optical properties of a semiconductor multi-shell spherical quantum dot with and without a hydrogenic donor impurity. The core and well layers are defined by the parabolic ... -
Optical Properties in a ZnS/CdS/ZnS Core/Shell/Shell Spherical Quantum Dot: Electric and Magnetic Field and Donor Impurity Effects
Sahin, Mehmet; Toscano-Negrette, Rafael G.; Leon-Gonzalez, Jose C.; Vinasco, Juan A.; Morales, A. L.; Koc, Fatih; Kavruk, Ahmet Emre; Mora-Ramos, M. E; Sierra-Ortega, Jose; Martinez-Orozco, J. C.; Restrepo, R. L; Duque, C. A. (MDPI, 2023)A theoretical analysis of optical properties in a ZnS/CdS/ZnS core/shell/shell spherical quantum dot was carried out within the effective mass approximation. The corresponding Schrödinger equation was solved using the ...
