Results 51 to 60 of about 53,002 (228)

Carboxylic-acid-passivated metal oxide nanocrystals : ligand exchange characteristics of a new binding motif [PDF]

, 2015
Ligand exchange is central in the processing of inorganic nanocrystals (NCs) and requires understanding of surface chemistry. Studying sterically stabilized HfO2 and ZrO2 NCs using H-1 solution NMR and IR spectroscopy as well as elemental analysis, this ...
Anderson, Anderson, Boettcher, Caldwell, Cros-Gagneux, De Roo, De Roo, Dierick, Fritzinger, Green, Green, Hassinen, Hens, Huang, Jasieniak, Morris-Cohen, Nel, Owen, Schrauben, Valdez, Valdez, Zherebetskyy   +21 more
core   +1 more source

Highly‐Emissive Organic Photovoltaics Approaching Theoretical Limit Voltage and Enabling Multifunctional Energy‐Harvesting Displays

Advanced Materials, EarlyView.
A highly‐emissive organic photovoltaic employs donor–acceptor pairs with alternately localized frontier molecular orbitals, preserving high triplet energies and small reorganization energies to suppress non‐radiative recombination. As a result, it exhibits a high open‐circuit voltage approaching the Shockley–Queisser limit and a high ...
Qing‐Jun Shui, Naoya Aizawa, Jinyao Xu, Atsuko Nihonyanagi, Daigo Miyajima, Ken‐ichi Nakayama, Yutaka Majima, Seiichiro Izawa   +7 more
wiley   +1 more source

Strategies for controlled electronic doping of colloidal quantum dots [PDF]

, 2015
Over the last several years tremendous progressed progress has been made in incorporating Colloidal Quantum Dots (CQDs) as photoactive components in optoelectronic devices. A significant part of that progress is associated with significant advancements
Konstantatos, Gerasimos, Stavrinadis, Alexandros   +1 more
core   +4 more sources

Role of Co2+ Incorporation in Significant Photocurrent Enhancement of Electrochemical Deposited CdSe Quantum Dots Sensitized TiO2 Nanorod Arrays Solar Cells

International Journal of Electrochemical Science, 2013
Cobalt doped CdSe quantum dots have been successfully synthesized on TiO2 nanorod arrays using the electrochemical deposition method, and the effect of Co2+ content on the properties of CdSe/TiO2 electrodes has been studied.
Baoyuan Wang, Jun Zhang, Yunxia Hu, Shuqiang Wang, Rong Liu, Chao He, Xina Wang, Hao Wang   +7 more
doaj   +1 more source

Surface Passivation of HgTe Nanocrystals Enabling EG/2 Open‐Circuit Voltage and Their Coupling to Dielectric Cavity for Narrow Detection

Advanced Materials, EarlyView.
This article explores how the integration of a thin shell, combined with optimized surface chemistry, enables the design of photodiodes based on short‐wave infrared HgTe nanocrystals. These photodiodes achieve an open‐circuit voltage greater than half the optical bandgap, which drastically reduces dark current. The article also explores the integration
Albin Colle, Clement Gureghian, Dario Mastrippolito, Mariarosa Cavallo, Jiho Roh, Marco Paye, Tommaso Gemo, Diogo Almeida, Adrien Khalili, Yoann Prado, Xavier Lafosse, Sandrine Ithurria, Mathieu G. Silly, Pavel Dudin, James K. Utterback, José Avila, Debora Pierucci, Emmanuel Lhuillier   +17 more
wiley   +1 more source

In situ interface engineering for probing the limit of quantum dot photovoltaic devices. [PDF]

, 2019
Quantum dot (QD) photovoltaic devices are attractive for their low-cost synthesis, tunable band gap and potentially high power conversion efficiency (PCE). However, the experimentally achieved efficiency to date remains far from ideal. Here, we report an
A Abass, B Tian, BK Miller, F Cavalca, F Xu, Feng Xu, G Cao, H Lee, Hui Dong, J Du, J Nepal, J Tang, J Tian, J Tian, J Van de Lagemaat, JB Sambur, JY Huang, K Zhao, L Li, Litao Sun, Longbing He, M Ni, MC Hanna, OE Semonin, P Sudhagar, PE De Jongh, PV Kamat, Q Liu, Q Shen, Qiubo Zhang, S Zhang, S-Q Fan, Tao Xu, TJ Kempa, W Shockley, X Lan, Xiangfeng Duan, Xiao Dong Tan, Xing Wu, XY Chen, Y Jin-nouchi, Y-L Lee, Yusheng Zhai, Z Pan, Z Sun, Z Sun, Z Zhu, Ze Zhang, Ziqi Sun   +48 more
core   +1 more source

Surface Properties and Composition Analysis of Nano-Sized Thin Films of CDSE: by SEM Analysis

East European Journal of Physics
Thin films of cadmium selenide with a thickness h = 200-500 nm were obtained and their surface properties were studied. The studies were carried out using a Scanning Electron Microscope.
L.N. Ibrahimova, N.M. Abdullayev, Sevinj R. Azimova, Y.I. Aliyev   +3 more
doaj   +1 more source

Strain Effects on the Band Gap and Diameter of CdSe Core and CdSe/ZnS Core/Shell Quantum Dots at Any Temperature

Advances in Materials Science and Engineering, 2019
We present the results of an experimental study about strain effects on the core band gap and diameter of spherical bare CdSe core and CdSe/ZnS core/shell quantum dots (QDs) synthesized by using a colloidal technique at varying temperatures.
Md. Rezaul Karim, Mesut Balaban, Hilmi Ünlü   +2 more
doaj   +1 more source

Synthesis and Study of CdSe QDs by a Microfluidic Method and via a Bulk Reaction

Crystals, 2019
In this work, we synthesized monodispersed CdSe quantum dots (QDs) by a microfluidic method and via a bulk reaction. The structures of the CdSe QDs were characterized by X-ray powder diffraction (XRD) and high-resolution transmission electron microscopy (
Jinfeng Liu, Yarong Gu, Qirui Wu, Xiaohong Wang, Lijuan Zhao, Andrew deMello, Weijia Wen, Rui Tong, Xiuqing Gong   +8 more
doaj   +1 more source

Exploring the Potential of Zero‐Dimensional Carbon Nanomaterials in Photoluminescent, Electrochemiluminescent and Electrochemical Sensors

Advanced Materials Interfaces, EarlyView.
Zero‐dimensional carbon nanomaterials are presented as multifunctional platforms linking structure, property, and sensing performance. Surface engineering and heteroatom doping modulate electron‐transfer and luminescent behavior, enabling electrochemical, photoluminescent, and electrochemiluminescent detection. Fundamental design principles, analytical
Gustavo Martins, Jeferson Luiz Gogola, Ava Gevaerd, Cristiane Kalinke, Paulo Roberto de Oliveira, Fabio Roberto Caetano, Bruno Campos Janegitz, Márcio Fernando Bergamini, Luiz Humberto Marcolino‐Junior   +8 more
wiley   +1 more source