Results 61 to 70 of about 60,145 (311)

Circularly polarized electroluminescence from a single-crystal organic microcavity light-emitting diode based on photonic spin-orbit interactions

Nature Communications, 2023
Nanoscale circularly polarized light sources are an important building block for future integrated photonics. Here the authors demonstrate circularly polarized light emission from a thin organic single crystal light-emitting diode.
Jichao Jia, Xue Cao, Xuekai Ma, Jianbo De, Jiannian Yao, Stefan Schumacher, Qing Liao, Hongbing Fu   +7 more
doaj   +1 more source

Use of confocal and multiphoton microscopy for the evaluation of micro-optical components and emitters

, 2004
We report on the application of confocal and multiphoton microscopic techniques for the evaluation of the latest generation of micro optical components.
Choi, H.W., McConnell, G., McConnell, G, E. Gu, Gu, E., C. Griffin, G. McConnell, M.D. Dawson, Dawson, M.D., Griffin, C., Dawson, MD, Girkin, JM, H.W. Choi, Griffin, C, Girkin, J.M., Gu, E, J.M. Girkin, Choi, HW   +17 more
core   +1 more source

High‐Index, Low‐Loss Optical Material Platforms for Ultra‐Broadband Ultraviolet‐to‐Visible Achromatic Metalenses

Advanced Functional Materials, EarlyView.
An integrated material platform combining engineered SiNx thin films and printable ZrO2 nanoparticle‐embedded resin enables broadband achromatic metalenses from the ultraviolet to visible range. The demonstrated meta‐optics achieve near‐diffraction‐limited focusing with minimal chromatic aberration.
Hyunjung Kang, Dongmin Jeon, Eunji Lee, Junsuk Rho   +3 more
wiley   +1 more source

Dual‐Function Interface Engineering for δ‐Phase‐Free Crystallization Toward Efficient and Stable FAPbI3 Perovskite Solar Cells

Advanced Functional Materials, EarlyView.
This work presents a dual‐function interface engineering strategy using PEACl to suppress the formation of the non‐perovskite δ‐FAPbI3 phase at the critical SnO2 buried interface. This approach enables the direct crystallization of the photoactive α‐phase, yielding highly efficient and stable rigid (25.6%) and flexible perovskite solar cells with ...
Xiao Wu, Shengyuan Wang, Pok Fung Chan, Zhenyi Ni, Hengkai Zhang, Chun‐Jen Su, Junyi Zhu, Xinhui Lu   +7 more
wiley   +1 more source

Synthesis and charaterisation of phosphorescent copper (I) complexes for light emitting devices [PDF]

, 2013
This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.Over the last decade, many significant developments have been made to improve the active materials in a new generation of organic light emitting devices ...
Andrés-Tomé, María Inmaculada
core  

Exciton Binding Energy of Phosphorescent Emitter Molecules in Organic Light‐Emitting Diodes

Advanced Functional Materials, EarlyView.
Energy level alignment is key to efficient OLED design, yet determining LUMO energies remains challenging. A methodology based on field‐induced dissociation and kinetic Monte Carlo simulations is presented to extract LUMO energies of iridium‐based phosphorescent emitters from their exciton binding energy.
Hiroki Tomita, Lucas R. L. Norg, Patrick Diederen, Clint van Hoesel, Christ H. L. Weijtens, Peter A. Bobbert, Reinder Coehoorn   +6 more
wiley   +1 more source

Intermediate-phase-assisted low-temperature formation of γ-CsPbI3 films for high-efficiency deep-red light-emitting devices

Nature Communications, 2020
Exploiting low-temperature formed black phase CsPbI3 for light-emitting applications remains a challenge. Here, the authors propose a method to enable the deposition of γ-CsPbI3 films at 100C and demonstrate a light-emitting diode with an external ...
Chang Yi, Chao Liu, Kaichuan Wen, Xiao-Ke Liu, Hao Zhang, Yong Yu, Ning Fan, Fuxiang Ji, Chaoyang Kuang, Bo Ma, Cailing Tu, Ya Zhang, Chen Xue, Renzhi Li, Feng Gao, Wei Huang, Jianpu Wang   +16 more
doaj   +1 more source

INSTRUMEN SUMBER CAHAYA LIGHT EMITTING DIODE (LED) UNTUK FOTODINAMIK INAKTIVASI BAKTERI PATOGEN [PDF]

, 2013
Invensi ini berhubungan dengan suatu instrumen sumber cahaya Light Emitting Diode (LED) yang digunakan untuk fotodinamik inaktivasi bakteri patogen.
Agus Supriyanto, NIDN. 0024086208, Kuwat Triyana, Suryani Dyah Astuti, NIDN. 0008046902   +2 more
core  

Ultrasensitive Anti‐Stokes Luminescence Thermometry in Transition Metal Dichalcogenide Monolayers

Advanced Functional Materials, EarlyView.
We demonstrate a highly sensitive nanothermometer using anti‐Stokes photoluminescence, also known as photoluminescence upconversion (UPL), in monolayer tungsten disulfide. A strong resonantly enhanced UPL is observed, confirming the central role of optical phonons in the PL upconversion mechanism.
Sharada Nagarkar, Fahrettin Sarcan, Elanur Hut, Emiliano R. Martins, Stuart A. Cavill, Thomas F. Krauss, Yue Wang   +6 more
wiley   +1 more source

Effect of surface treatment of GaN based light emitting diode wafers on the leakage current of light emitting diode devices

, 2010
To form low-resistance Ohmic contact to p-type GaN, InGaN/GaN multiple quantum well light emitting diode wafers are treated with boiled aqua regia prior to Ni/Au (5 nm/5 nm) film deposition.
Yang H, Zhang, SM, Chinese Acad Sci, Inst Semicond, State Key Lab Integrated Optoelect, Beijing 100083, Peoples R China. E-mail Address: smzhang@red.semi.ac.cn, Zhu JH, Zhao DG, Wang YT, Wang LJ, Zhu JJ, Zhang SM, Liu ZS, Jiang DS   +9 more
core   +1 more source