Article
Chemistry, Multidisciplinary
Michael P. Campos, Jonathan De Roo, Matthew W. Greenberg, Brandon M. McMurtry, Mark P. Hendricks, Ellie Bennett, Natalie Saenz, Matthew Y. Sfeir, Benjamin Abecassis, Sanjit K. Ghose, Jonathan S. Owen
Summary: A library of thio- and selenourea derivatives is used to adjust the kinetics of PbS and PbSe nanocrystal formation at various temperatures, revealing an induction delay and exploring the structure and size distribution of the nanocrystals, with results suggesting that the duration of the nucleation period has a minor influence on the size distribution.
Article
Nanoscience & Nanotechnology
Raphael Schwanninger, Stefan M. Koepfli, Olesya Yarema, Alexander Dorodnyy, Maksym Yarema, Annina Moser, Shadi Nashashibi, Yuriy Fedoryshyn, Vanessa Wood, Juerg Leuthold
Summary: We demonstrate compact and efficient photodetectors operating at room temperature in a wavelength range of 2710-4250 nm with high responsivities of 375 and 4 A/W. The key to their high performance is the combination of a sintered colloidal quantum dot (CQD) heterojunction photoconductor and a metallic metasurface perfect absorber. The combination results in a 20-fold increase in responsivity compared to reference photoconductors.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Melody L. Kessler, Jennica E. Kelm, Hannah E. Starr, Emma N. Cook, Joshua D. Miller, Nelson A. Rivera, Heileen Hsu-Kim, Jillian L. Dempsey
Summary: This study reports three separate ligand-based reaction mechanisms between oleate-capped PbS nanocrystals and undec-10-ene-1-thiol (UDT), and reveals how these three pathways are intertwined. Experimental evidence shows different reaction pathways occur depending on the quantity of UDT added, including Z-type displacement, L-type binding, and X-type exchange mechanisms.
CHEMISTRY OF MATERIALS
(2022)
Article
Engineering, Electrical & Electronic
Irina Grevtseva, Tamara Chevychelova, Oleg Ovchinnikov, Mikhail Smirnov, Tamara Kondratenko, Vladimir Khokhlov, Andrey Zvyagin, Marina Astashkina, Kirill Chirkov
Summary: This paper presents new regularities of the size effect in IR luminescence of semiconductor colloidal PbS quantum dots. The study found that decreasing the average size of PbS quantum dots from 4.9 nm to 2.6 nm resulted in a shift of the luminescence peak from 1350 nm to 865 nm. Additionally, the excitation spectrum showed a shift of the peak due to exciton absorption from 1235 nm to 707 nm. The observed luminescence was determined to be caused by the radiative annihilation of excitons in PbS quantum dots.
OPTICAL AND QUANTUM ELECTRONICS
(2023)
Article
Chemistry, Physical
Leon Biesterfeld, Lars F. Klepzig, Andre Niebur, Marina Rosebrock, Jannika Lauth
Summary: Treatment with metal halides can improve the emission brightness and optical properties of colloidal 2D PbSe nanoplatelets. Surface passivation leads to a significant increase in photoluminescence quantum yield and a decrease in full width at half-maximum. This has important implications for the application of 2D PbSe NPLs in fiber optics.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Chemistry, Multidisciplinary
Adrian Ionut Nicoara, Mihai Eftimie, Mihail Elisa, Ileana Cristina Vasiliu, Cristina Bartha, Monica Enculescu, Mihaela Filipescu, Cesar Elosua Aguado, Diego Lopez, Bogdan Alexandru Sava, Mihai Oane
Summary: This study investigates the properties of a novel PbS quantum dots-doped inorganic thin film and demonstrates its potential application in temperature sensor systems. The film was synthesized using the sol-gel method and characterized using various techniques. The results show that the PbS-doped film exhibits luminescence in the near infrared region, which makes it suitable for temperature sensing.
Article
Chemistry, Multidisciplinary
Jacopo Pinna, Razieh Mehrabi Koushki, Dnyaneshwar S. Gavhane, Majid Ahmadi, Suhas Mutalik, Muhammad Zohaib, Loredana Protesescu, Bart J. Kooi, Giuseppe Portale, Maria Antonietta Loi
Summary: Nanoscale-level controlled ordering of colloidal quantum dots allows the achievement of outstanding transport properties, paving the way toward a new generation of optoelectronic devices.
ADVANCED MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Hao He, Panpan Li, Xiaoqing Liu, Shiqing Xu, Junjie Zhang
Summary: Compared with CsPbBr3 perovskite quantum dots, CsPbCl3 quantum dots are difficult to precipitate in a glass matrix. In this study, CsPbCl3-xBrx (X < 3) quantum dots in phosphate glasses are prepared using a mechanical crystallization method. Experimental results show that CsPbBr3 quantum dots are easily obtained in the glass matrix under stress, but with the increase of Cl- content, obtaining Cl-containing quantum dots becomes challenging, and the mechanism is further studied. Raman spectra reveal that the difficulty in precipitating Cl-containing quantum dots is attributed to the closer glass network structure. Scanning electron microscope results further demonstrate that the uniformity of the glass matrix improves and macroscopic defects decrease with the increase of Cl composition, resulting in the reduction of shear bands under stress, which inhibits the nucleation and growth of quantum dots.
Article
Chemistry, Physical
Junqi Hu, Mengmeng Yang, Xi Ke, Shuhui Yang, Kunqiang Wang, Haowei Huang, Weizhe Wang, Dongxiang Luo, Zhaoqiang Zheng, Le Huang, Peng Xiao, Chen Tu, Yonggang Min, Nengjie Huo, Menglong Zhang
Summary: In this study, a mixed dimensional material containing cubic 0D CsPbBr3 perovskite quantum dots and cubic 2D-PbS was prepared for CO2 reduction to fuels. The combination of 0D and 2D materials resulted in improved photocurrent and outstanding selectivity and activity in reducing CO2 to CO and CH4. The synthesized PQDs on 2D-PbS exhibited a reduced size compared to those synthesized in solvent, leading to wider bandgap and enhanced potential for photocatalytic reactions.
JOURNAL OF POWER SOURCES
(2021)
Article
Chemistry, Physical
Ha-Chi V. Tran, Bora Kim, Hyojung Kim, Sungwook Park, Ju Young Woo, Sohee Jeong
Summary: This study demonstrates for the first time that triiodide ions hinder the anion-exchange activities in lead halide perovskite nanocrystals (LHP NCs) and result in the formation of LHP NCs with a low photoluminescence quantum yield. Heating the precursor solution can effectively minimize the concentration of triiodide and obtain high-efficiency anion-exchange LHP NCs with a high photoluminescence quantum yield.
CHEMISTRY OF MATERIALS
(2022)
Article
Chemistry, Physical
Miguel Albaladejo-Siguan, David Becker-Koch, Elizabeth C. Baird, Yvonne J. Hofstetter, Ben P. Carwithen, Anton Kirch, Sebastian Reineke, Artem A. Bakulin, Fabian Paulus, Yana Vaynzof
Summary: Light-harvesting devices made from lead sulfide quantum dot absorbers have promising applications in third-generation photovoltaics. Passivating the quantum dot surfaces and managing the excess lead halide can improve device performance and stability.
ADVANCED ENERGY MATERIALS
(2022)
Article
Chemistry, Physical
Tom Galle, Daniel Spittel, Nelli Weiss, Volodymyr Shamraienko, Helena Decker, Maximilian Georgi, Rene Huebner, Nadia Metzkow, Christine Steinbach, Dana Schwarz, Vladimir Lesnyak, Alexander Eychmueller
Summary: The research transforms CdSe NPLs into PbSe NPLs suitable for optoelectronic applications through cation exchange, ligand exchange, and electronic coupling, successfully fabricating a photodetector with fast light response at low operational voltages on a commercial substrate.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2021)
Article
Engineering, Electrical & Electronic
Pengyu Chen, Zhiming Wu, Yuanlin Shi, Chunyu Li, Jinquan Wang, Jun Yang, Xiang Dong, Jun Gou, Jun Wang, Yadong Jiang
Summary: This study presents a new strategy for infrared photodetection by integrating silicon and PbSe colloidal quantum dots (CQDs), achieving a high responsivity, fast response, and excellent detectivity. The performance of the device is attributed to the photovoltage generated at the interface between silicon and quantum dots, showing promising application prospects in optoelectronics.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Chemistry, Multidisciplinary
Sisi Liu, Kao Xiong, Kang Wang, Guijie Liang, Ming-Yu Li, Haodong Tang, Xiaokun Yang, Zhen Huang, Linyuan Lian, Manlin Tan, Kai Wang, Liang Gao, Haisheng Song, Daoli Zhang, Jianbo Gao, Xinzheng Lan, Jiang Tang, Jianbing Zhang
Summary: The study developed a hybrid ligand co-passivation strategy to improve the quality of PbSe QD solids, leading to excellent trap-state control and prolonged carrier lifetime. The hybrid ligand treatment achieved high V-OC and high J(SC) simultaneously in IR QD solar cells, resulting in the highest IR-PCE for PbSe QD IR solar cells at present.
Article
Chemistry, Physical
Bastiaan B. Salzmann, Jur de Wit, Chen Li, Daniel Arenas-Esteban, Sara Bals, Andries Meijerink, Daniel Vanmaekelbergh
Summary: This study prepared two-dimensional CdSe-PbSe heterostructures and PbSe NPLs through Pb2+-for-Cd2+ cation exchange and characterized the intermediary NCs with advanced microscopy and spectroscopy techniques. The growth of PbSe domains in CdSe NPLs occurs through the replacement of zinc blende CdSe lattice with rock salt PbSe phase while preserving the anion sublattice. Temperature-dependent emission measurements reveal size-dependent change of band gap energy and the influence of the anisotropic shape.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Optics
E. Kolobkova, A. Alkhlef, B. M. Dinh, A. S. Yasukevich, O. P. Dernovich, N. Kuleshov, N. Nikonorov
JOURNAL OF LUMINESCENCE
(2019)
Article
Optics
S. K. Evstropiev, N. V. Nikonorov, V. M. Kiselev, A. S. Saratovskii, E. V. Kolobkova
OPTICS AND SPECTROSCOPY
(2019)
Article
Optics
M. Korolkov, I. A. Khodasevich, A. S. Grabtchikov, D. Mogilevtsev, E. Kolobkova
Article
Materials Science, Ceramics
E. Kolobkova, A. Alkhlef, L. Yu Mironov, O. Bogdanov
CERAMICS INTERNATIONAL
(2020)
Article
Materials Science, Ceramics
O. A. Bogdanov, E. Kolobkova, S. N. Perevislov
Summary: Increasing the concentration of Ba(PO3)(2) in the glass leads to a decrease in the thermal coefficient of linear expansion, an increase in glass transition temperature and crystallization, and a broadening of the T-x-T-g interval. Additionally, it also results in an increase in microhardness HV and fracture toughness K-1C of the glasses. Comparing the main thermomechanical characteristics of the studied glasses with their commercial analogs shows significant differences.
GLASS PHYSICS AND CHEMISTRY
(2021)
Article
Optics
Elena Kolobkova, Ahmed Alkhlef, Natalia Kuzmenko, I. A. Khodasevich, Alexander Grabtchikov
Summary: A series of new fluorophosphate glasses co-doped with Er3+/Yb(3+) ions were developed with varying Er3+ concentrations. The luminescent properties were studied using Judd-Ofelt theory and stimulated emission cross-sections were determined by Fuchtbauer-Landenburg equation and modified reciprocity method. The high intensity of upconversion luminescence of Er3+ ions and impurity Tm3+ ions occurs through cooperative energy transfer mechanism.
JOURNAL OF LUMINESCENCE
(2021)
Article
Materials Science, Ceramics
E. Kolobkova, M. S. Kuznetsova, N. Nikonorov
Summary: CsPbX3 (X=Cl, Br, I) nanocrystals were successfully synthesized in fluorophosphate glasses for the first time, with controlled formation through adjustment of cooling rate and heat treatment conditions. The X-ray diffraction data and optical measurements confirmed the formation of 4-11 nm sized CsPbX3 nanocrystals, with the presence of two narrow bands in the luminescence spectra due to the introduction of two anions complicating the preparation process. The CsPb(Cl, Br)3 quantum dots exhibited high intensity photoluminescence with a quantum yield of 45-50% and narrow emission band.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2021)
Article
Optics
Leonid Yu Mironov, Elena Kolobkova
Summary: A series of new fluorophosphate glasses with varying concentrations of Yb3+ ions were synthesized and characterized through absorption, luminescence, and luminescence kinetics measurements, while potential laser performance parameters were calculated, such as pump saturation and minimum fraction of excited ions needed for gain balance.
JOURNAL OF LUMINESCENCE
(2022)
Proceedings Paper
Engineering, Electrical & Electronic
I. A. Khodasevich, A. S. Grabtchikov, M. V. Korolkov, D. S. Mogilevtsev, E. V. Kolobkova
INTERNATIONAL CONFERENCE LASER OPTICS 2020 (ICLO 2020)
(2020)
Proceedings Paper
Engineering, Electrical & Electronic
E. Kolobkova, A. Alkhlef, N. Nikonorov
FIBER LASERS AND GLASS PHOTONICS: MATERIALS THROUGH APPLICATIONS II
(2020)
Article
Optics
E. V. Kolobkova, A. Alkhlef, A. S. Yasyukevich
OPTICS AND SPECTROSCOPY
(2020)
Article
Materials Science, Multidisciplinary
Elena Kolobkova, Nikolay Nikonorov, Anastasiia Babkina, Alexander Grabtchikov, Inna Khodasevich, Mikhail Korolkov
Article
Chemistry, Multidisciplinary
V. Yu. Prokof'ev, N. E. Gordina, O. N. Zakharov, E. V. Tsvetova, E. Kolobkova
IZVESTIYA VYSSHIKH UCHEBNYKH ZAVEDENII KHIMIYA I KHIMICHESKAYA TEKHNOLOGIYA
(2020)
Proceedings Paper
Physics, Multidisciplinary
A. N. Babkina, K. S. Zyryanova, D. A. Agafonova, R. K. Nuryev, E. V. Kolobkova, A. I. Ignatiev
INTERNATIONAL CONFERENCE PHYSICA.SPB/2019
(2019)
Article
Nanoscience & Nanotechnology
Elena Kolobkova, Maria Sergeevna Kuznetsova, Nikolai Nikonorov
ACS APPLIED NANO MATERIALS
(2019)
Article
Materials Science, Multidisciplinary
Yanbin Wang, Xinyou Huang, Ziqiu Cheng, Penghui Chen, Yuyang Chen, Junhao Ye, Haohong Chen, Zhenzhen Zhou, Denis Yu Kosyanov, Jiang Li
Summary: Uniform Al2O3-Ce:LuAG composite phosphor ceramics (CPCs) with excellent luminescent properties and thermal stability have been successfully synthesized in this study, showing great potential for application in solid-state laser lighting.
Article
Materials Science, Multidisciplinary
Syed Muhammad Ali Zaidi, Mazhar Ali Kalyar, Zulfiqar Ali Raza, Aayesha Shoukat, Rubaila Waseem, Muhammad Aslam
Summary: Polyvinyl alcohol (PVA) nanocomposite strips embedded with graphene nanosheets and copper-ferrite nanoparticles were synthesized using solution casting technique. Laser pulse irradiations were then applied to modify the structural, optical, and electrical properties of the strips, showing potential for optoelectronic devices.
Article
Materials Science, Multidisciplinary
Yunru Chen, Jialing Wu, Jiajia Wang, Shihui Ma, Hongwei Yu
Summary: This paper investigates the angular non-critical phase-matching second-harmonic-generation properties of Ba3(ZnB5O10)PO4 crystal and explores its potential applications in the output spectral regions.
Article
Materials Science, Multidisciplinary
Qun Jing, Menglin Zhu, Lu Li, Xu Ji, Haiming Duan, Henglei Chen, Ming-Hsien Lee
Summary: The paper introduces two new nonlinear optical materials, MZnPO4 (M = Rb, Cs), synthesized by cation substitution. These materials exhibit a honeycomb-like structure and show mild SHG responses with short absorption edges. The thermal properties, IR spectra, and theoretical calculations of the materials are also discussed.
Article
Materials Science, Multidisciplinary
Camila Ianhez-Pereira, Akhil Kuriakose, Ariano De Giovanni Rodrigues, Ana Luiza Costa Silva, Ottavia Jedrkiewicz, Monica Bollani, Marcio Peron Franco de Godoy
Summary: This study aims to evaluate the crystalline changes induced by ultrafast laser micromachining on manganese oxide thin films using micro-Raman spectroscopy. The results show that laser-writing is effective in locally modifying low-crystallinity films and increasing crystallite sizes, highlighting an interesting approach to evaluate laser-induced structural modifications on metal oxide thin films.
Article
Materials Science, Multidisciplinary
Kamal Bansal, Neeraj Kumar Mishra, Ibrahim Abdullahi, Param Jeet Singh, Mohit Tyagi, Sukhpal Singh
Summary: A novel Sm3+ activated oxyfluoride glass was synthesized and its structure and properties were analyzed. The glass showed potential applications in lasers, optical temperature sensing, and high-energy scintillators.
Article
Materials Science, Multidisciplinary
Xingjian Wang, Zhixu Wu, Jiawei Zhu, Yubin Kang, Mengqiang Cai, Yong Xia, Hui Deng
Summary: Antimony sulfide (Sb2S3) has been investigated as a promising material for visible light photodetectors due to its non-toxicity, stability, and high absorption coefficient. In this study, we systematically explored the impact of key parameters on the performance of Sb2S3 devices using simulation and successfully fabricated self-powered photodetectors with high responsivity and specific detectivity. Furthermore, we demonstrated the application of the Sb2S3 detector in a scanning imaging system, showcasing its potential for developing new types of visible light detectors and imaging systems.
Article
Materials Science, Multidisciplinary
O. I. Sallam, R. M. Ahmed
Summary: The 20NaF-60P2O5-20Na2O fluorophosphate glass systems doped with 3 wt% of CoO and NiO were investigated for their optical parameters before and after gamma irradiation. The presence of defects within the glass network and the addition of transition metals were found to affect the properties of the composites. After irradiation, a red shift was observed in the dissipation factor spectrum. The energy lost at the surface of the composites was larger than the energy lost within the constituent materials. All investigated composites showed insulating behavior and exhibited increased nonlinear optical parameters after irradiation, with the CoO-doped composite showing the highest values.
Article
Materials Science, Multidisciplinary
Fahimeh Ahmadi, Zeinab Ebrahimpour, Asghar Asgari, Bao Van
Summary: In this study, Er3+-doped sulfophosphate glasses containing titanium nanoparticles (TiO2 NPs) and different concentrations of silver nanoparticles (AgNPs) were synthesized. The impact of AgNPs on the physical and structural characteristics, optical absorption and emission features, and photocatalytic activity of the glasses were investigated. The results showed that the addition of AgNPs enhanced the emission intensity of the glasses, with the system containing 0.04 mol% of AgNPs exhibiting optimal performance. Furthermore, the presence of AgNPs and TiO2 NPs in the glass matrix positively affected the photocatalytic performance.
Article
Materials Science, Multidisciplinary
Zhuang Li, Rongfei Huang, Wei Yuan, Shaoqiang Zheng, Wenlu Liao, Huiying Xu, Zhiping Cai
Summary: This study reports the first realization of an 868 nm Pr:YLF laser pumped by an InGaN blue laser diode. The laser achieved a maximum power of 641 mW with stable output and good beam quality. The experimental results were in agreement with theoretical simulations.
Article
Materials Science, Multidisciplinary
Bhishma Karki, Youssef Trabelsi, Amrindra Pal, Sofyan A. Taya, Ram Bharos Yadav
Summary: This study proposes an SF11 Prism- Ag- ZnO nanowires-CeO2-Sensing layer-based surface plasmon resonance sensor for measuring dopamine concentration in human blood. The sensor demonstrates high sensitivity and detection accuracy, and holds significant importance for early diagnosis of neurological diseases.
Article
Materials Science, Multidisciplinary
M. Taoufiq, A. Soussi, A. Elfanaoui, A. Ait Hssi, S. Baoubih, A. Ihlal, K. Bouabid
Summary: In this study, the effect of copper doping within ZnS on glass substrates was investigated through experimental and theoretical approaches. Pure ZnS and Cu-doped ZnS films with varying copper concentrations were deposited on glass substrates using the SILAR technique. The structural, morphological, and optical properties of the films were characterized, and the theoretical FP-LAPW method based on density functional theory was employed to study the properties of copper-doped ZnS.
