Results 151 to 160 of about 30,637 (263)

Wireless, Deep‐Seeing Smart Pill: A NIR‐II Fluorescence Imaging Capsule Endoscope for Gastrointestinal Cancer

Advanced Science, EarlyView.
A novel near‐infrared‐II fluorescent imaging capsule endoscope that detects specific fluorescence signals above 900 nm enables highly sensitive, targeted imaging of gastrointestinal cancer tissue. This wirelessly powered and magnetically controlled “smart pill” achieves high sensitivity and deep tissue penetration, allowing precise, non‐invasive ...
Weicheng Wang, Jinlei Jiang, Zhengting Wang, Shuqi Liu, Wei Wang, Xi Chen, Qirui Zhao, Xinyuan Cui, Cheng Zhou, Shengsheng Cui, Daxiang Cui   +10 more
wiley   +1 more source

Non-doped hot-exciton blue organic light-emitting diodes with efficiency over 20. [PDF]

Natl Sci Rev
Li M, Li Y, Yu Y, Chen Y, Pan J, Peng F, Yang D, Ma D, Ying L, Ma Y.   +9 more
europepmc   +1 more source

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

Porphyrin-nitrogen carbon dot composites for high-performance organic light-emitting diodes. [PDF]

Sci Rep
Georgiopoulou Z, Rizou ME, Verykios A, Soultati A, Chatzigiannakis G, Triantis TM, Chroneos A, Ladomenou K, Coutsolelos AG, Vasilopoulou M.   +9 more
europepmc   +1 more source

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

Numerical Simulation of Optical and Electronic Properties for Multilayer Organic Light-emitting Diodes and Its Application in Engineering Education

, 2012
[[abstract]]Organic light-emitting diodes (OLEDs) have been extensively developed in the past few years. The OLED displays have advantages over other displays, such as CRT, LCD, and PDP in thickness, weight, brightness, response time, viewing angle ...
Chang, Shu-Hsuan; Chang, Yung-Cheng; Yang, Cheng-Hong; Chen, Jun-Rong; Kuo, Yen-Kuang
core  

Scalable nanopatterning of organic light-emitting diodes beyond the diffraction limit. [PDF]

Nat Photonics
Marcato T, Oh J, Lin ZH, Tian T, Gogoi A, Shivarudraiah SB, Kumar S, Govind Rajan A, Zeng S, Shih CJ.   +9 more
europepmc   +1 more source

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

Understanding exciton diffusion in organic solar cells

, 2013
Organic solar cells are promising candidates for future energy production. However, many challenges remain to optimise efficiency. One particular challenge lies in our understanding of the factors affecting exciton diffusion and the length scale of this
Illingworth, Amy
core  

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

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