Results 151 to 160 of about 49,207 (274)

Materials for Suppressed Triplet‐Polaron Quenching in Efficient and Long‐Lifetime Phosphorescent OLEDs

Advanced Optical Materials, EarlyView.
We performed a computational screening of phosphorescent emitters and charge transporters for OLEDs to identify combinations that minimize triplet‐polaron quenching, a major cause of efficiency loss and short operational lifetimes, especially in blue OLEDs. Our results reveal key design rules and highlight emitter‐transporter pairs that strongly reduce
Clint van Hoesel, Reinder Coehoorn, Peter A. Bobbert   +2 more
wiley   +1 more source

Chameleonic Color‐Variable Microbead Emitters for Multilevel Spectroscopic Encryption from Visible to Infrared Wavelengths

Advanced Optical Materials, EarlyView.
Whispering‐gallery‐mode microresonators with sharp resonant peaks enable photonic barcoding. Similar to a chameleon, a rare‐earth‐free microcavity with π‐conjugated PAHs enables visibleto‐near infrared color generation from a single microbead. The unique resonat emission (spectral barcode) can be dynamically transformed via excitation wavelength change,
Barun Kumar Barman, Keisuke Watanabe, Kenzo Deguchi, Shinobu Ohki, Kenjiro Hashi, Atsushi Goto, Tadaaki Nagao   +6 more
wiley   +1 more source

New π-Conjugated Materials Based on Furylenevinylene Candidate for Organic Solar Cells Application: A DFT Study

Orbital: The Electronic Journal of Chemistry, 2015
The specific properties of organic-conjugated molecules and polymers are of great importance since they have become the most promising materials for the optoelectronic device technology such as solar cells.
Aziz El Alamy, Amina Amine, Mohamed Bouachrine   +2 more
doaj  

Molecules with Exceptionally Small HOMO–LUMO Gaps

, 2005
Dmitrii F. Perepichka, Martin R. Bryce
openalex   +2 more sources

Metal‐Metal‐π Interaction: A Pathway to Construct Organic–Inorganic Excited‐State and Supramolecular Assembly

Advanced Optical Materials, EarlyView.
An organic–inorganic mixed excited state is designed and demonstrated by combining the metal–metal and π–π interactions within a supramolecular Pt2–pyrene assembly. Directional orbital overlap between the Pt and carbon atoms gives rise to a long‐lived triplet emission, strong emission polarization, exciton–exciton annihilation, and efficient exciton ...
Ying Luo, Yangbo Zhang, Ning Zhou, Xiong Wang, Ying‐Fan Tan, Wenjie Zou, Wei Lu, Qingyun Wan   +7 more
wiley   +1 more source

High throughput tight binding calculation of electronic HOMO-LUMO gaps and its prediction for natural compounds [PDF]

Sascha Thinius
openalex   +2 more sources

Extension of the Scretching Quantum Chain to Molecular Systems: Diatomics, Polyatomics, HOMO-LUMO Gaps, Polarizability, and Vibrational Frequencies from First Principles Without Empirical Parameters

Scretching Daniel
openalex   +1 more source

3‐Azafluorenone Derivatives with Small HOMO–LUMO Gaps, Allowing Visible‐Light Absorption [PDF]

Toshimichi Kobayashi, Yuki Itabashi, Kento Iwai, Tsuyoshi INOUE, Kei Ohkubo, Haruyasu Asahara   +5 more
openalex   +1 more source

Structural Modulation of Charge Transfer in Donor–Acceptor Systems: Effects of Donor Type and Connectivity

Advanced Optical Materials, EarlyView.
A coherent phthalimide acceptor platform with planar (Cz—carbazole) and spiro‐type (SAF—spiroacridine fluorene) donors enables systematic tuning of donor geometry and coupling, driving the evolution of excited‐state topology from classical CT‐TADF and fluorescence/RTP to CT‐driven and LE‐assisted TADF with OLED efficiencies ≈ 36%.
Christopher Anton Wallerius, Robert Herzhoff, Soyoung Boo, Andreas Mischok, Dirk Hertel, Jörg‐Martin Neudörfl, Daniele Fazzi, Malte C. Gather, Klaus Meerholz   +8 more
wiley   +1 more source

Intramolecular FRET Cascades Enable Small Efficiency Roll‐Off in Solution‐Processed OLEDs

Advanced Optical Materials, EarlyView.
This work highlights how an intramolecular FRET design strategy in solution‐processable MR‐TADF emitters enables narrowband emission, high PLQY, and efficient exciton harvesting. The resulting hyperfluorescent solution‐processed OLEDs reach up to 20.7% EQEmax with minimal efficiency roll‐off even at 10 000 cd m−2, demonstrating strong potential for ...
Mahni Fatahi, Debasish Barman, Youichi Tsuchiya, Chihaya Adachi, Eli Zysman‐Colman   +4 more
wiley   +1 more source