Results 111 to 120 of about 103,476 (250)

Exciton Delocalization and Polarizability in Perylenetetracarboxylic Diimide Probed Using Electroabsorption and Fluorescence Spectroscopies

Molecules
Perylenetetracarboxylic diimide (PTCDI) is an n-type organic semiconductor molecule that has been widely utilized in numerous applications such as photocatalysis and field-effect transistors.
Md. Bulu Rahman, Ahatashamul Islam, Toshifumi Iimori   +2 more
doaj   +1 more source

The trion as an exciton interacting with a carrier

, 2003
The X$^-$ trion is essentially an electron bound to an exciton. However, due to the composite nature of the exciton, there is no way to write an exciton-electron interaction potential.
Betbeder-Matibet, O., Combesccot, M.
core   +2 more sources

Probing exciton diffusion dynamics in photosynthetic supercomplexes via exciton–exciton annihilation [PDF]

The Journal of Chemical Physics
Photosynthesis converts solar energy into chemical energy through coordinated energy transfer between light-harvesting complexes and reaction centers (RCs). Understanding exciton motion, particularly the exciton diffusion length, is essential for optimizing energy efficiency in photosystems.
Kunyan Zhang, Tsung-Yen Lee, Shiun-Jr Yang, Trisha Bhagde, Masakazu Iwai, Graham R. Fleming   +5 more
openaire   +2 more sources

Orbital Geometry‐Governed Response of Pressure‐Tunable Quantum Defects in hBN

Advanced Functional Materials, EarlyView.
Defects in hBN act as ultrasensitive quantum manometers when the energy of the intradefect optical transitions is modified by lattice compression. The orbital geometry of the electron wave functions governs how electron hopping and Coulomb interactions react uniquely to the reduction of the van der Waals gap and in‐plane compression, leading to robust ...
Magdalena Grzeszczyk, Danis I. Badrtdinov, Kenji Watanabe, Takashi Taniguchi, Cyrus E. Dreyer, Malte Rösner, Maciej Koperski   +6 more
wiley   +1 more source

Ultrasensitive Anti‐Stokes Luminescence Thermometry in Transition Metal Dichalcogenide Monolayers

Advanced Functional Materials, EarlyView.
We demonstrate a highly sensitive nanothermometer using anti‐Stokes photoluminescence, also known as photoluminescence upconversion (UPL), in monolayer tungsten disulfide. A strong resonantly enhanced UPL is observed, confirming the central role of optical phonons in the PL upconversion mechanism.
Sharada Nagarkar, Fahrettin Sarcan, Elanur Hut, Emiliano R. Martins, Stuart A. Cavill, Thomas F. Krauss, Yue Wang   +6 more
wiley   +1 more source

Fluorescent Nanosensor for Indole‐3‐Propionic Acid Detection in Gut Health Monitoring

Advanced Healthcare Materials, EarlyView.
This work introduces a fluorescent nanosensor system with two optical modalities for detection of indole‐3‐propionic acid (IPA) gut metabolite: (1) blue‐emitting cationic conjugated polyelectrolyte (CP3) and (2) near‐infrared (NIR)‐emitting CP3‐wrapped single‐walled carbon nanotube (SWNT).
Mervin Chun‐Yi Ang, Jonathan Wei Jie Lee, Sayyid Mohaideen, Gabriel Sánchez‐Velázquez, Song Wang, Yangyang Han, Liu Lin, Germaine Yong, Raju Cheerlavancha, Duc Thinh Khong, Jianhong Ching, Sharon Hong Yu Han, Jun Yu Yeo, Lian Xu, Gajendra Pratap Singh, Michael S. Strano   +15 more
wiley   +1 more source

Excitonic Evolution in WS₂/MoS₂ van der Waals Heterostructures Turned by Out-of-Plane Localized Pressure

Applied Sciences
In this study, we explore the exciton dynamics in a WS2/MoS2 van der Waals (vdW) heterostructure under varying pressures by integrating a laser-confocal photoluminescence (PL) spectroscope and an atomic force microscope (AFM).
Weihu Kong, Zeqian Ren, Peng Chen, Jinxiang Cui, Yili Chen, Jizhou Wu, Yuqing Li, Wenliang Liu, Peng Li, Yongming Fu, Jie Ma   +10 more
doaj   +1 more source

Ferroelectric Quantum Dots for Retinomorphic In‐Sensor Computing

Advanced Materials, EarlyView.
This work has provided a protocol for fabricating retinomorphic phototransistors by integrating ferroelectric ligands with quantum dots. The resulting device combines ferroelectricity, optical responsiveness, and low‐power operation to enable adaptive signal amplification and high recognition accuracy under low‐light conditions, while supporting ...
Tingyu Long, Huanyu Zhou, Jaewan Ko, Hongwei Tan, Jaemin Lim, Yanfei Zhao, Daehan Kang, Eojin Yoon, Gyeong‐Tak Go, Somin Kim, Seung‐Woo Lee, Chan‐Yul Park, Hyojun Choi, Hyeran Kim, Hyung Joong Yun, Sung Hyuk Park, Kwan Sik Park, Jeong Woo Park, Mungeun Kim, Yong Soo Cho, Ho Won Jang, Wenqiang Yang, Min Hyuk Park, Wan Ki Bae, Sebastiaan van Dijken, Joona Bang, Tae‐Woo Lee   +26 more
wiley   +1 more source

Năng lượng liên kết của exciton trong giếng lượng tử parabol AlGaAs/GaAs/AlGaAs dưới tác dụng của từ trường đều áp theo hướng nuôi

Tạp chí Khoa học Đại học Cần Thơ, 2015
Trong nghiên cứu này, chúng tôi tính năng lượng liên kết của exciton Wannier trong giếng lượng tử parabol đặt trong từ trường đều dọc theo hướng nuôi sử dụng phương pháp biến phân.
Phạm Thị Bích Thảo, Nguyễn Duy Khánh, Nguyễn Thành Tiên   +2 more
doaj  

The behaviour of exciton–polaritons [PDF]

Nature Photonics, 2012
Keywords: Condensate ; Fluid Reference EPFL-ARTICLE-176827doi:10.1038/nphoton.2012.52View record in Web of Science Record created on 2012-05-04, modified on 2017-12 ...
openaire   +2 more sources