Results 171 to 180 of about 30,403 (309)

Fluorescence Tuning of Carbon Dots from Red to Blue via UV‐Induced Photochemical Etching

Advanced Science, EarlyView.
A UV‐driven photochemical process enables continuous color evolution of carbon dots from red to blue using a single irradiation parameter. Progressive photoetching restructures graphitic domains and surface states, allowing full visible‐spectrum emission control.
Nanzhi Zheng, Yuchen Yang, Jingwei Xu, Jincheng Gan, Yinuo An, Xinyu Li, Guohua Chen   +6 more
wiley   +1 more source

Smart Delayed Fluorescent AIEgens for Organic Light-Emitting Diodes: Mechanism and Adjustable Performance. [PDF]

Molecules
Yan C, Ni J.
europepmc   +1 more source

Substituent effects in twisted dibenzotetracene derivatives: Blue emitting materials for organic light-emitting diodes

, 2015
A series of dibenzotetracene derivatives containing different substituents at    the 11-,12-positions have been successfully synthesized and characterized.
Zhao, JW (赵建文), Xiao, JC (Xiao, Jinchong), Liu, ZY (Liu, Zhenying), Wu, WC (吴伟晨), Su, WM (苏文明), Zhang, XM (Z张学敏), Lv, B (Lv, Bo), Wang, XF (Wang, Xuefei), Jiang, L (姜丽i), Ren, TJ (Ren, Tiejun), Chen, H (Chen, Hua)   +10 more
core  

Flexoelectricity in Photoconversion: Fundamentals, Materials, and Outlooks

Advanced Science, EarlyView.
Mechanical bending of a flexible cantilever induces a strain gradient in the photoactive material. The resulting flexoelectric field couples with photovoltaic and photoconductive effects, modulating charge generation, separation, and collection. A comparative analysis of oxide perovskites, halide perovskites, and two‐dimensional materials is presented,
Xiang Huang, Feng Li, Rongkun Zheng
wiley   +1 more source

Vacuum-Evaporated, Lead-Free RbYbI₃ Perovskite Interlayers for Universal Electron Injection in High-Performance Organic Light-Emitting Diodes. [PDF]

Adv Mater
Katware AS, Kim WS, Jang JH, Lee H, Amin A, Im J, Kim BS, Lee JH.   +7 more
europepmc   +1 more source

Characterisation of organic materials for photovoltaic devices

, 2006
This thesis presents an investigation into a wide range of potential materials for organic photovoltaic (PV) devices. A variety of optical techniques are used to define physical parameters for each material such as the photoluminescence quantum yield (
Lewis, Andrew J., Andrew J. Lewis
core  

Tailoring Multifunctional Carbon Dots via Precursor Stoichiometry: Switching Between Solid‐State Fluorescence and Broadband Absorption Through Aggregation Control

Advanced Science, EarlyView.
Precursor stoichiometry programs the surface chemistry of carbon dots, directing their self‐assembly into distinct aggregation modes. Aldehyde‐enriched surfaces form ordered, hydrogen‐bonded assemblies that enable bright red solid‐state fluorescence, whereas amine‐rich surfaces promote compact π–π stacked aggregates with broadband visible‐light ...
Gaixia Yang, Hao Sun, Defa Hou, Fulin Yang, Yuan Zou, Bei Zhou, Lanxiang Liu, Xu Lin, Guanben Du   +8 more
wiley   +1 more source

A Novel Dual-Functional Photomultiplication-Type Organic Photodetector with Photon-Regeneration Gain by Integrated Organic Light-Emitting Diodes. [PDF]

Research (Wash D C)
Li J, Yang L, He G, Fu J, Dong R, Guo D, Yang D, Ma D.   +7 more
europepmc   +1 more source

Organic LEDs: from limits analysis to device performances improvement

, 2009
This thesis is centred on the study of opto-electronic devices and their characteristics to give a right understanding on the injection and transport mechanisms of charge carriers. Temperature dependence and high field limits are analyzed and the failure
Nenna, Giuseppe
core  

Neuromorphic Near‐Sensor and In‐Sensor Computing Enabled by Next‐Generation Material‐Based Sensors

Advanced Science, EarlyView.
This Review presents a structural framework that classifies neuromorphic sensing into near‐sensor and in‐sensor architectures, clarifying physical coupling between sensing and computation. The framework connects neural and synaptic device functions with recent advances in optical, mechanical, and chemical sensing, compares energy consumption and ...
Su Yeon Jung, Gwang Ya Kim, Sejin Kim, Hyunjong Seo, Se Gi Lee, Sang Min Won, Dongjoon Rhee, Joohoon Kang   +7 more
wiley   +1 more source