Results 51 to 60 of about 58,732 (296)

Inkjet printed LED based pH chemical sensor for gas sensing [PDF]

, 2009
Predictable behaviour is a critical factor when developing a sensor for potential deployment within a wireless sensor network (WSN). The work presented here details the fabrication and performance of an optical chemical sensor for gaseous acetic acid ...
Abe, Allain, Bae, Beirne, Bharathan, Byrne, Carter, Crowley, Crowley, Crowley, Dermot Diamond, Diamond, Diamond, Gordon G. Wallace, Grady, Hasenbank, Haverinen, Hayes, Hebner, Janata, Janzen, Kim, Lau, Leopold, Li, Mabrook, Magdassi, Martina O’Toole, Nivens, Nivens, O’Toole, O’Toole, Pacquit, Pacquit, Rakow, Rakow, Reis, Roderick Shepherd, Rogers, Shepherd, Shepherd, Shepherd, Spadavecchia, Stewart, Weigl   +44 more
core   +1 more source

Reducing Open‐Circuit Voltage Losses in Wide‐Bandgap FAPbBr3 Perovskite Solar Cells for Continuous Unassisted Light‐Driven Water Splitting

Advanced Functional Materials, EarlyView.
The combination of formamidinium thiocyanate and 1,3‐propane diammonium iodide for bulk and top‐surface passivation, and a ternary fullerene blend to improve energy band alignment, suppresses energy losses in wide‐bandgap FAPbBr3 perovskite solar cells.
Laura Bellini, Daniël Grosfeld, Bruno Branco, Guus J. W. Aalbers, Lana M. Kessels, Willemijn H. M. Remmerswaal, Nicolas Daub, Kunal Datta, Martijn M. Wienk, René A. J. Janssen   +9 more
wiley   +1 more source

New Optoelectronic Technology Simplified for Organic Light Emitting Diode (OLED) [PDF]

Journal of Systemics, Cybernetics and Informatics, 2014
The development of Organic Light Emitting Diode (OLED), using an optically transparent substrate material and organic semiconductor materials, has been widely utilized by the electronic industry when producing new technological products. The OLED are the
Andre F. S. Guedes, Vilmar P. Guedes, Simone Tartari, Mônica L. Souza, Idaulo J. Cunha   +4 more
doaj  

A modular and interactive OLED-based lighting system [PDF]

, 2017
The concept of a flexible, large-area, organic light emitting diode (OLED)-based lighting system with a modular structure and built-in intelligent light management is introduced.
Baric, Adrijan, Cauwe, Maarten, Doutreloigne, Jan, Kundrata, Jurica, Monté, Ann, Schram, Jeroen   +5 more
core   +1 more source

Top-emitting organic light-emitting diodes

Optics Express, 2011
We review top-emitting organic light-emitting diodes (OLEDs), which are beneficial for lighting and display applications, where non-transparent substrates are used. The optical effects of the microcavity structure as well as the loss mechanisms are discussed. Outcoupling techniques and the work on white top-emitting OLEDs are summarized. We discuss the
Simone, Hofmann, Michael, Thomschke, Björn, Lüssem, Karl, Leo   +3 more
openaire   +2 more sources

Spectrally Tunable 2D Material‐Based Infrared Photodetectors for Intelligent Optoelectronics

Advanced Functional Materials, EarlyView.
Intelligent optoelectronics through spectral engineering of 2D material‐based infrared photodetectors. Abstract The evolution of intelligent optoelectronic systems is driven by artificial intelligence (AI). However, their practical realization hinges on the ability to dynamically capture and process optical signals across a broad infrared (IR) spectrum.
Junheon Ha, Yingshan Ma, Yong Nam An, Sung‐Un An, Hyeon Hak Jung, Suvi‐Tuuli Varjamo, Jiwon Yoo, Junho Min, Hanvit Kim, Faisal Ahmed, Sang Hoon Chae, Young Min Song, Weiwei Cai, Tawfique Hasan, Zhipei Sun, Dong‐Ho Kang, Hyeon‐Jin Shin, Yunyun Dai, Hoon Hahn Yoon   +18 more
wiley   +1 more source

Device-spectroscopy of magnetic field effects in a polyfluorene organic light-emitting diode

, 2007
We perform charge-induced absorption and electroluminescence spectroscopy in a polyfluorene organic magnetoresistive device. Our experiments allow us to measure the singlet exciton, triplet exciton and polaron densities in a live device under an applied ...
B. Movaghar, J. Rybicki, M. Wohlgenannt, T. D. Nguyen, U. E. Steiner, Y. Sheng, Z. V. Vardeny   +6 more
core   +1 more source

Active-matrix GaN micro light-emitting diode display with unprecedented brightness [PDF]

, 2015
Displays based on microsized gallium nitride light-emitting diodes possess extraordinary brightness. It is demonstrated here both theoretically and experimentally that the layout of the n-contact in these devices is important for the best device ...
Dawson, Martin D., Ferreira, Ricardo, Gu, Erdan, Henderson, Robert K., Herrnsdorf, Johannes, Kelly, Anthony E., Massoubre, David, Mckendry, Jonathan J.D., Underwood, Ian, Watson, Scott, Xie, Enyuan, Zhang, Shuailong, Zuhdi, Ahmad Mahmood   +12 more
core   +1 more source

The Effect of Purcell Cavities on the Lifetime of Thermally Activated Delayed Fluorescent Emitters

Advanced Functional Materials, EarlyView.
A pressing challenge to OLED displays and lighting is to balance high efficiency and long operational lifetime in the deep blue spectrum. The Purcell effect can reduce the triplet density and hence the probability for destructive energy‐driven triplet annihilation events that limit the OLED lifetime. Here we study of the Purcell effect on two different
Sritoma Paul, Haonan Zhao, Collin N. Muniz, Mark E. Thompson, Stephen R. Forrest   +4 more
wiley   +1 more source

Ultra-bright and highly efficient inorganic based perovskite light-emitting diodes

Nature Communications, 2017
Hybrid organic-inorganic perovskites are garnering attention for light emitting diode (LED) applications. Employing a thin hydrophilic insulating polymer, Zhanget al.
Liuqi Zhang, Xiaolei Yang, Qi Jiang, Pengyang Wang, Zhigang Yin, Xingwang Zhang, Hairen Tan, Yang (Michael) Yang, Mingyang Wei, Brandon R. Sutherland, Edward H. Sargent, Jingbi You   +11 more
doaj   +1 more source