Results 51 to 60 of about 2,519 (186)

Effect of size and shape on reflective properties of silicon nanocone arrays

Journal of Hebei University of Science and Technology, 2018
In order to investigate the optical properties of silicon nanocone arrays with different sizes and shapes, the nanocone arrays are fabricated on silicon substrate by submicron dry etching process masked by self-assembled nano-particles.
Xiangmeng LI, Xijing ZHU, Huifen WEI, Xueliang CUI, Jiansu LI   +4 more
doaj   +1 more source

Microscopic defects as the limiting factor in the direct transmission of nanocoatings obtained through self‐assembly

Nano Select, 2021
Colloidal lithography is a very popular method to achieve large‐scale antireflective coatings. Those sometimes display large a falloff in direct transmission for short wavelengths, which has been linked to scattering.
Loïc O. Le Cunff, Hind Kadiri, Gilles Lérondel   +2 more
doaj   +1 more source

Research Progress of Three‐Terminal Perovskite/Silicon Tandem Solar Cells Based on Back‐Contact Silicon

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Perovskite/silicon tandem solar cells offer efficiencies beyond 30%, yet conventional architectures face trade‐offs between optical performance and current matching. Three‐terminal tandems employing silicon back‐contact bottom cells eliminate the current‐matching constraint while minimizing optical losses, offering superior energy yield under real ...
Yunhao Fan, Sheng Ma, Huanpei Huang, Zhengping Li, Wenzhong Shen   +4 more
wiley   +1 more source

Metasurface optical antireflection coating [PDF]

Applied Physics Letters, 2014
Light reflection at the boundary of two different media is one of the fundamental phenomena in optics, and reduction of reflection is highly desirable in many optical systems. Traditionally, optical antireflection has been accomplished using single- or multiple-layer dielectric films and graded index surface structures in various wavelength ranges ...
Hou-Tong Chen, Boyang Zhang, Junpeng Guo, Joshua Hendrickson, Nima Nader   +4 more
openaire   +1 more source

Flexibilizing inorganic thermoelectrics

FlexMat, EarlyView.
This perspective reviews advances in flexible inorganic thermoelectric materials, covering ductile bulks, thin films, and fibers/yarns. It highlights strategies like warm metalworking, van der Waals material screening, orientation and sandwich engineering, and device integration, offering pathways to combine flexibility and performance for wearable ...
Xiao‐Lei Shi, Nan‐Hai Li, Meng Li, Zhi‐Gang Chen   +3 more
wiley   +1 more source

Preparation of wide optical spectrum and high antireflection MgF2 thin film with SF6 as reactive gas

Materials Research Express, 2020
In order to suppress F-deficiency, SF _6 was added into the working gas Ar _2 as the reaction gas to deposit MgF _2 thin film on quartz glass substrate with radio frequency (RF) magnetron sputtering, and the effects of working pressure on the chemical ...
Changjiang Zhao, Chao Ma, Juncheng Liu, Zhigang Liu, Yan Chen   +4 more
doaj   +1 more source

Overcoming spectral limits of perovskite photodetectors for the infrared region

InfoScience, EarlyView.
Infrared (IR) photodetectors are vital for modern optoelectronics, but traditional inorganic semiconductors face limitations in cost, processing, and bandgap tunability. This review provides a summary of advanced strategies to extend metal halide perovskites into the IR region, categorizing approaches into intrinsic material engineering, physical ...
Jiean Li, Bobo Li, Mingxia Qiu, Wang Zhang, Xuan Fang   +4 more
wiley   +1 more source

Dual-Coated Antireflective Film for Flexible and Robust Multi-Environmental Optoelectronic Applications

Biomimetics
Artificial antireflective nanostructured surfaces, inspired by moth eyes, effectively reduce optical losses at interfaces, offering significant advantages in enhancing optical performance in various optoelectronic applications, including solar cells ...
Hyuk Jae Jang, Jaemin Jeon, Joo Ho Yun, Iqbal Shudha Tasnim, Soyeon Han, Heeyoung Lee, Sungguk An, Seungbeom Kang, Dongyeon Kim, Young Min Song   +9 more
doaj   +1 more source

Black GaAs: Gold-Assisted Chemical Etching for Light Trapping and Photon Recycling

Micromachines, 2020
Thanks to its excellent semiconductor properties, like high charge carrier mobility and absorption coefficient in the near infrared spectral region, GaAs is the material of choice for thin film photovoltaic devices.
Paola Lova, Cesare Soci
doaj   +1 more source

Kinetic Study on the Reaction of Phenylperoxy Radicals With Nitric Oxide

International Journal of Chemical Kinetics, EarlyView.
ABSTRACT Cavity ring‐down spectroscopy (CRDS) and quantum cascade laser absorption spectroscopy (QCLAS), in conjunction with pulsed laser photolysis, were employed to investigate the reaction between phenylperoxy radicals (C6H5O2) and nitric oxide (NO) at a temperature of 296 ± 4 K. The experiment was carried out under N2 as bath gas.
Maya Matsushita, Michiya Fujita, Kenichi Tonokura   +2 more
wiley   +1 more source