Results 61 to 70 of about 351,410 (208)

High-fidelity colour reproduction for high-dynamic-range imaging [PDF]

, 2010
The aim of this thesis is to develop a colour reproduction system for high-dynamic-range (HDR) imaging. Classical colour reproduction systems fail to reproduce HDR images because current characterisation methods and colour appearance models fail to ...
Kim, M.H.
core  

A psychophysical analysis of the discernible palette for colour names [PDF]

A laboratory-based experiment with a colour-calibrated display was used to collect examples of colours that participants associate with each of 9 colour names.
Vazirian, M., Pan, Q., Westland, S., Lee, S., Lai, P.   +4 more
core   +5 more sources

Spirobifluorene fusion in multiple resonance frameworks enables efficient pure‐red OLEDs with narrowband emission and suppressed efficiency roll‐off

FlexMat, EarlyView.
An orthogonal spirobifluorene‐fusion strategy is introduced for B/N/O‐alternated MR frameworks, enabling improved kRISC (5.46 × 103 s−1), high ΦPL (97%), and narrow‐band pure‐red emission. Vacuum‐evaporated OLEDs incorporating this emitter achieve an EQEmax >40% (FWHM = 36 nm) and exhibit exceptionally low efficiency roll‐off at high luminance ...
Yan‐Yun Jing, Han Wu, Xiaoling Xu, Sijie Xian, Jingsheng Miao, Xiaojun Yin, Chuluo Yang, Xiaosong Cao   +7 more
wiley   +1 more source

Lead‐free halide perovskites for efficient light‐emitting devices

FlexMat, EarlyView.
Overview of Lead‐free metal halide perovskites with different categories and optoelectronic application directions, including solid‐state lighting, light‐emitting diodes, piezoluminescence, flexible electronics, scintillators and CPL emitters. Abstract Lead halide perovskites exhibit promising optoelectronic properties for optoelectronic applications ...
Yueqi Shen, Kefan Meng, Yiqi Zhao, Chaoran Zhou, Jiaye Shu, Di Zhang, Chengqian Cao, Wanxin Chen, Yefeng Zhou, Weihua Ning   +9 more
wiley   +1 more source

Colour appearance descriptors for image browsing and retrieval

, 2008
In this paper, we focus on the development of whole-scene colour appearance descriptors for classification to be used in browsing applications. The descriptors can classify a whole-scene image into various categories of semantically-based colour ...
Martinez, Kirk, Othman, Aniza
core   +1 more source

Deep red to near‐infrared thermally activated delayed fluorescence conjugated polymers toward highly efficient solution‐processible deep red and near‐infrared organic light‐emitting diodes

FlexMat, EarlyView.
A series of deep red (DR) and near‐infrared (NIR) thermally activated delayed fluorescence conjugated polymers are prepared, their solution‐processible organic light‐emitting diodes exhibit DR emission with maximum external quantum efficiency (EQEmax) of 6.4%, high luminance of 4254 cd m−2 and emission peak at 678 nm, and a NIR device with EQEmax of 2 ...
Tao Wang, Hongyang Zhang, Liping Jin, Peng Tao, Yanxiang Cheng, Wai‐Yeung Wong   +5 more
wiley   +1 more source

Colour gamut enhancement with remote light conversion mechanism

Journal of Physics: Conference Series, 2018
The backlight unit spectrum of liquid crystal displays (LCD) directly affects the colour gamut. With the invention of GaN based blue light emitting diodes (LED), phosphors and quantum dots (QD) have gained considerable scientific interest due to their broad range of applications especially in lighting and display technologies.
Koseoglu, D., Sezer, Y. S., Karsli, K.
openaire   +3 more sources

Recent progress and challenges in top‐emitting quantum dot light‐emitting diodes

FlexMat, EarlyView.
This review summarizes recent advances in top‐emitting quantum‐dot light‐emitting diodes (TE‐QLEDs), including device architectures, microcavity engineering, angular‐emission management, and operational stability, highlighting optical–electrical–thermal co‐optimization as the key pathway toward reliable, high‐performance TE‐QLEDs. Abstract Top‐emitting
Chengyi Chen, Yuqi Liang, Mian Wei, Qiulei Xu, Huimin Zhang, Zhenghui Wu, Huaibin Shen   +6 more
wiley   +1 more source

Recent advances and prospects for high‐efficiency blue hot exciton organic light‐emitting diodes

FlexMat, EarlyView.
Blue organic light‐emitting diodes (OLEDs) face great challenges in achieving the balance between color purity, device efficiency, and stability. Hot exciton materials offer a solution by rapidly converting non‐emissive triplet excitons into singlet ones through a high‐lying reverse intersystem crossing process.
Xiaoen Shi, Shuyuan Ge, Futong Liu, Ping Lu   +3 more
wiley   +1 more source

Image Vividness Changes due to White‐Boosting on WOLED Display

Journal of the Society for Information Display, EarlyView.
White‐Boosting is a display technique for RGBW WOLED panels that increases peak brightness. This study investigated its effect on perceived image vividness using paired‐comparison experiments. Across three psychophysical experiments, higher White‐Boosting consistently enhanced perceived vividness.
Woojae Jung, Youngshin Kwak, Myong Young Lee, Junghyun Ham   +3 more
wiley   +1 more source