Effects of tuning the applied voltage pulse periods on the electroluminescence spectra of host–guest white light-emitting electrochemical cells

2018 ◽  
Vol 20 (27) ◽  
pp. 18226-18232 ◽  
Author(s):  
Ming-Lun Wu ◽  
Guan-Yu Chen ◽  
Ting-An Shih ◽  
Chin-Wei Lu ◽  
Hai-Ching Su
Keyword(s):  
White Light ◽  
Applied Voltage ◽  
Voltage Pulse ◽  
Color Temperature ◽  
Electrochemical Cells ◽  
Pulse Period ◽  
Light Emitting ◽  
Applied Voltage Pulse

Tunable correlated color temperature of electroluminescence from white light-emitting electrochemical cells based on adjusting the voltage pulse period.

Laser-Scanned Programmable Color Temperature of Electroluminescence from White Light-Emitting Electrochemical Cells

2016 ◽  
Vol 8 (46) ◽  
pp. 31799-31805 ◽  
Author(s):  
Hsiao-Chin Lee ◽  
Chien-Ming Fan Chiang ◽  
Po-Yi Wu ◽  
Yung-Chi Yao ◽  
Monima Sarma ◽  
...  
Keyword(s):  
White Light ◽  
Color Temperature ◽  
Electrochemical Cells ◽  
Light Emitting

Tuning the Color Temperature of White-Light-Emitting Electrochemical Cells by Laser-Scanning Perovskite-Nanocrystal Color Conversion Layers

ChemPlusChem ◽  
2017 ◽  
Vol 83 (4) ◽  
pp. 239-245 ◽  
Author(s):  
Wen-Kuang Wu ◽  
Cheng-Ming Wang ◽  
Ming-Che Chan ◽  
Jiun-Yi Lien ◽  
Yong-Ming Su ◽  
...  
Keyword(s):  
White Light ◽  
Laser Scanning ◽  
Color Temperature ◽  
Electrochemical Cells ◽  
Light Emitting ◽  
Color Conversion

Dynamically tuning the correlated color temperature of white light-emitting electrochemical cells with electrochromic filters

2017 ◽  
Vol 48 ◽  
pp. 248-253 ◽  
Author(s):  
Bo-Ruei Chiou ◽  
Hsiao-Chin Lee ◽  
Yea-Fen Jang ◽  
Zu-Po Yang ◽  
Yao-Chin Wang ◽  
...  
Keyword(s):  
White Light ◽  
Color Temperature ◽  
Electrochemical Cells ◽  
Light Emitting

Synthesis of red-emitting cationic Ir (III) complex and its application in white light-emitting electrochemical cells

2017 ◽  
Vol 42 ◽  
pp. 303-308 ◽  
Author(s):  
Qunying Zeng ◽  
Fushan Li ◽  
Tailiang Guo ◽  
Guogang Shan ◽  
Zhongmin Su
Keyword(s):  
White Light ◽  
Electrochemical Cells ◽  
Light Emitting

scholarly journals Near Unity PLQY and High Stability of Barium Thiocyanate Based All-Inorganic Perovskites and Their Applications in White Light-Emitting Diodes

Photonics ◽  
2021 ◽  
Vol 8 (6) ◽  
pp. 209
Author(s):  
Gopi Chandra Adhikari ◽  
Saroj Thapa ◽  
Yang Yue ◽  
Hongyang Zhu ◽  
Peifen Zhu
Keyword(s):  
White Light ◽  
Large Scale ◽  
Light Emitting Diode ◽  
Photophysical Properties ◽  
Environmental Stability ◽  
Color Temperature ◽  
Ambient Atmosphere ◽  
Light Emitting ◽  
Halide Perovskite ◽  
Lead Halide

All-inorganic lead halide perovskite (CsPbX3) nanocrystals (NCs) have emerged as a highly promising new generation of light emitters due to their extraordinary photophysical properties. However, the performance of these semiconducting NCs is undermined due to the inherent toxicity of lead and long-term environmental stability. Here, we report the addition of B-site cation and X-site anion (pseudo-halide) concurrently using Ba(SCN)2 (≤50%) in CsPbX3 NCs to reduce the lead and improve the photophysical properties and stability. The as-grown particles demonstrated an analogous structure with an almost identical lattice constant and a fluctuation of particle size without altering the morphology of particles. Photoluminescence quantum yield is enhanced up to near unity (~98%) by taking advantage of concomitant doping at the B- and X-site of the structure. Benefitted from the defect reductions and stronger bonding interaction between Pb2+ and SCN− ions, Ba(SCN)2-based NCs exhibit improved stability towards air and moisture compared to the host NCs. The doped NCs retain higher PLQY (as high as seven times) compared to the host NCs) when stored in an ambient atmosphere for more than 176 days. A novel 3D-printed multiplex color conversion layer was used to fabricate a white light-emitting diode (LED). The obtained white light shows a correlated color temperature of 6764 K, a color rendering index of 87, and luminous efficacy of radiation of 333 lm/W. In summary, this work proposes a facile route to treat sensitive lead halide perovskite NCs and to fabricate LEDs by using a low-cost large-scale 3-D printing method, which would serve as a foundation for fabricating high-quality optoelectronic devices for near future lighting technologies.

scholarly journals Novel Red‐Emitting Copper(I) Complexes with Pyrazine and Pyrimidinyl Ancillary Ligands for White Light‐Emitting Electrochemical Cells

2021 ◽  
pp. 2101999
Author(s):  
Elisa Fresta ◽  
Gilbert U. Mahoro ◽  
Luca M. Cavinato ◽  
Jean‐Francois Lohier ◽  
Jean‐Luc Renaud ◽  
...  
Keyword(s):  
White Light ◽  
Electrochemical Cells ◽  
Ancillary Ligands ◽  
Light Emitting
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