Scopus Publications
- Probing thermal stability in CsPbI3quantum dots with coupled Pb-site doping and halide passivation
Pouriya Naziri, Saba Sepahban Shahgoli, Hadi Jahangiri, Umut Aydemir
Nanoscale, 2026
Synergistic Pb-site substitution and halide surface passivation increase lattice rigidity and suppress thermally activated nonradiative pathways in CsPbI 3 quantum dots, shifting photoluminescence quenching to higher temperatures. - Synergistic Silver Doping and Halide Passivation for Enhanced Stability and Emission Efficiency in CsPbI3Quantum Dots
Pouriya Naziri, Asim Onal, Paul Simon, Saba Sepahban Shahgoli, Alp Yilmaz, Naeimeh Sadat Peighambardoust, Sedat Nizamoglu, Umut Aydemir
ACS Applied Nano Materials, 2025
The intrinsic instability of CsPbI3 quantum dots (QDs) presents a major challenge for their practical deployment in optoelectronic devices. Here, we demonstrate the combined effects of Ag+ doping and halide (Cl–/I–) passivation to enhance the structural and optical stability of CsPbI3 QDs. Partial substitution of Pb2+ by Ag+ leads to lattice contraction and defect suppression, while Cl– acts as a surface-localized passivating agent. Structural analyses (X-ray diffraction, high-resolution transmission electron microscopy, and high-resolution scanning transmission electron microscopy) confirm successful Ag+ incorporation without secondary phase formation, and X-ray photoelectron spectroscopy depth profiling reveals surface enrichment of Cl–. Mixed doping with AgCl and AgI precursors effectively stabilizes the cubic perovskite phase, increasing the photoluminescence quantum yield (PLQY) from ∼85 to 96.6% and reducing nonradiative recombination, as supported by time-resolved photoluminescence measurements. The optimized CsPb1–xAgxI3 (x = 0.025 AgCl + 0.025 AgI) exhibits outstanding photostability, retaining ∼41% of its initial PLQY after 70 days of continuous ultraviolet exposure. When integrated into red-emitting light-emitting diode devices, these QDs deliver external quantum efficiencies up to 36.8%, with stable and saturated emission. These results establish Ag+/halide codoping as a powerful strategy to advance CsPbI3 QDs toward robust and high-performance optoelectronic applications. - Chiral dopant effects on the birefringence and transmittance of nematic and polymer-stabilized liquid crystals for future applications
M. Khadem Sadigh, P. Naziri, A. Ranjkesh
Journal of Optics India, 2024 - Survey of Synergistically Doped CsPbI3 Quantum Dots for LED Applications
Pouriya Naziri, Paul Simon, Asim Onal, Sedat Nizamoglu, Umut Aydemir, Naeimeh Sadat Peighambardoust
ACS Applied Nano Materials, 2024
In recent years, colloidal quantum dots (QDs) derived from inorganic halide perovskites have shown great promise in optoelectronic applications. Despite their promising optical properties, the full potential of CsPbI3 QDs is significantly undermined by high surface trap densities and poor environmental stability. To address these challenges, this research focuses on an innovative approach involving synergetic Co2+ doping of CsPbI3 QDs and I–/Cl– ion passivation. Co2+ doping is achieved by utilizing various dopant sources such as CoI2, CoCl2, and mixed CoI2/CoCl2. The anions from CoCl2 and CoI2 occupy iodide vacancies, thereby reducing nonradiative recombination. The optimized composition, CsPb0.95Co0.05I3 QDs with mixed CoI2/CoCl2 doping, exhibits exceptionally low trap density and superior stability. The superior efficacy of mixed doping compared to sole CoCl2 doping suggests the complementary action of I– ions (from CoI2) along with Cl– ions (from CoCl2) in passivating surface defects. Optimized CsPb0.95Co0.05I3 QDs demonstrate a significant boost in photoluminescence (PL) performance and stability, achieving an exceptional 98.86% PL quantum efficiency while maintaining stability for over two months under UV light exposure. Integration of the optimized QDs into LED devices yields an outstanding external quantum efficiency (EQE) of 34.6%, showcasing their promising potential for efficient lighting applications. - The impact of caffeine on tau-tau interaction: LSPR detection, structural modification and molecular dynamics simulation
Reza Yekta, Leila Sadeghi, Sohrab Ahmadi-Kandjani, Pouriya Naziri, Mohammad-Reza Rashidi, Gholamreza Dehghan
Journal of Molecular Liquids, 2021 - Relationship of pitch length of cholesteric liquid crystals with order parameter and normalized polarizability
M. Khadem Sadigh, P. Naziri, A. Ranjkesh, M.S. Zakerhamidi
Optical Materials, 2021 - Temperature dependent features of polymer stabilized cholesteric liquid crystals based on selected liquid crystal characteristics
M. Khadem Sadigh, P. Naziri, M.S. Zakerhamidi, A. Ranjkesh, Tae-Hoon Yoon
Optik, 2021
RECENT SCHOLAR PUBLICATIONS
- Probing thermal stability in CsPbI 3 quantum dots with coupled Pb-site doping and halide passivation
P Naziri, SS Shahgoli, H Jahangiri, U Aydemir
Nanoscale 18 (9), 4887-4900 , 2026
2026 - Synergistic Silver Doping and Halide Passivation for Enhanced Stability and Emission Efficiency in CsPbI 3 Quantum Dots
P Naziri, A Onal, P Simon, S Sepahban Shahgoli, A Yilmaz, ...
ACS Applied Nano Materials 8 (43), 20902-20914 , 2025
2025
Citations: 2 - Chiral Dopant effects on the birefringence and transmittance of nematic and polymer-stabilized liquid crystals for future applications
M Khadem Sadigh, P Naziri, A Ranjkesh
Journal of Optics 53 (4), 3351-3358 , 2024
2024
Citations: 3 - Survey of Synergistically Doped CsPbI 3 Quantum Dots for LED Applications
P Naziri, P Simon, A Onal, S Nizamoglu, U Aydemir, NS Peighambardoust
ACS Applied Nano Materials 7 (14), 16735-16748 , 2024
2024
Citations: 4 - The fabrication of zinc oxide inverse opal photonic crystals by using PMMA microspheres
Zahra Dayem Omid, Sohrab Ahmadi-Kandjani, Pouriya Naziri,Babak Olyaeefar
Optics and Photonics Society of Iran (ICOP & ICPET 2022) , 2022
2022 - The impact of caffeine on tau-tau interaction: LSPR detection, structural modification and molecular dynamics simulation
R Yekta, L Sadeghi, S Ahmadi-Kandjani, P Naziri, MR Rashidi, ...
Journal of Molecular Liquids 338, 115914 , 2021
2021
Citations: 3 - Relationship of pitch length of cholesteric liquid crystals with order parameter and normalized polarizability
MK Sadigh, P Naziri, A Ranjkesh, MS Zakerhamidi
Optical Materials 119, 111373 , 2021
2021
Citations: 20 - Temperature dependent features of polymer stabilized cholesteric liquid crystals based on selected liquid crystal characteristics
MK Sadigh, P Naziri, MS Zakerhamidi, A Ranjkesh, TH Yoon
Optik 230, 166354 , 2021
2021
Citations: 19 - Study of optical- electrical properties of cholesteric and polymer- stabilized cholesteric Liquid crystals for smart window application
THY Pouriya Naziri , Mahsa Khadem sadigh, Mohammad Sadegh Zakerhamidi , Amid ...
Optics and Photonics Society of Iran (ICOP & ICPET 2020 ) 26 , 2020
2020 - Electrically wavelength tuning of Bragg reflection in Polymer-stabilized cholesteric liquid crystal reflectors
THY Pouriya Naziri , Mahsa Khadem sadigh, Mohammad Sadegh Zakerhamidi , Amid ...
international workshop on quantum computing and quantum optics , Riapa … , 2019
2019
MOST CITED SCHOLAR PUBLICATIONS
- Relationship of pitch length of cholesteric liquid crystals with order parameter and normalized polarizability
MK Sadigh, P Naziri, A Ranjkesh, MS Zakerhamidi
Optical Materials 119, 111373 , 2021
2021
Citations: 20 - Temperature dependent features of polymer stabilized cholesteric liquid crystals based on selected liquid crystal characteristics
MK Sadigh, P Naziri, MS Zakerhamidi, A Ranjkesh, TH Yoon
Optik 230, 166354 , 2021
2021
Citations: 19 - Survey of Synergistically Doped CsPbI 3 Quantum Dots for LED Applications
P Naziri, P Simon, A Onal, S Nizamoglu, U Aydemir, NS Peighambardoust
ACS Applied Nano Materials 7 (14), 16735-16748 , 2024
2024
Citations: 4 - Chiral Dopant effects on the birefringence and transmittance of nematic and polymer-stabilized liquid crystals for future applications
M Khadem Sadigh, P Naziri, A Ranjkesh
Journal of Optics 53 (4), 3351-3358 , 2024
2024
Citations: 3 - The impact of caffeine on tau-tau interaction: LSPR detection, structural modification and molecular dynamics simulation
R Yekta, L Sadeghi, S Ahmadi-Kandjani, P Naziri, MR Rashidi, ...
Journal of Molecular Liquids 338, 115914 , 2021
2021
Citations: 3 - Synergistic Silver Doping and Halide Passivation for Enhanced Stability and Emission Efficiency in CsPbI 3 Quantum Dots
P Naziri, A Onal, P Simon, S Sepahban Shahgoli, A Yilmaz, ...
ACS Applied Nano Materials 8 (43), 20902-20914 , 2025
2025
Citations: 2 - Probing thermal stability in CsPbI 3 quantum dots with coupled Pb-site doping and halide passivation
P Naziri, SS Shahgoli, H Jahangiri, U Aydemir
Nanoscale 18 (9), 4887-4900 , 2026
2026 - The fabrication of zinc oxide inverse opal photonic crystals by using PMMA microspheres
Zahra Dayem Omid, Sohrab Ahmadi-Kandjani, Pouriya Naziri,Babak Olyaeefar
Optics and Photonics Society of Iran (ICOP & ICPET 2022) , 2022
2022 - Study of optical- electrical properties of cholesteric and polymer- stabilized cholesteric Liquid crystals for smart window application
THY Pouriya Naziri , Mahsa Khadem sadigh, Mohammad Sadegh Zakerhamidi , Amid ...
Optics and Photonics Society of Iran (ICOP & ICPET 2020 ) 26 , 2020
2020 - Electrically wavelength tuning of Bragg reflection in Polymer-stabilized cholesteric liquid crystal reflectors
THY Pouriya Naziri , Mahsa Khadem sadigh, Mohammad Sadegh Zakerhamidi , Amid ...
international workshop on quantum computing and quantum optics , Riapa … , 2019
2019
