Results 31 to 40 of about 4,322 (253)

Colloidal quantum dots on macroscale perovskite single crystal with perfect lattice matching

Light: Advanced Manufacturing
Quantum dots, semiconductor crystals with nanometer-scale dimensions, exhibit adjustable chemical, electrical, and optical characteristics owing to the quantum confinement effect.
Yu-Hao Deng, Yun-Gang Sang, Xiao-Wei Zhang, Yi-Fei Mao, Ren-Min Ma   +4 more
doaj   +1 more source

Effects of CsSn x Pb1−x I3 Quantum Dots as Interfacial Layer on Photovoltaic Performance of Carbon-Based Perovskite Solar Cells

Nanoscale Research Letters, 2021
In this work, inorganic tin-doped perovskite quantum dots (PQDs) are incorporated into carbon-based perovskite solar cells (PSCs) to improve their photovoltaic performance.
Chi Zhang, Zhiyuan He, Xuanhui Luo, Rangwei Meng, Mengwei Chen, Haifei Lu, Yingping Yang   +6 more
doaj   +1 more source

Application of carbon materials in perovskite solar cells

Cailiao gongcheng, 2019
Perovskite solar cells have the advantages of low material cost, simple production process and high photoelectric conversion efficiency, and their development prospects are bright. Carbon materials are used in various components of perovskite solar cells
YING Cheng-zhan, LYU Qiu-juan, LIU Chao-hui, BI Song, HOU Gen-liang, TANG Jin   +5 more
doaj   +1 more source

Perovskite quantum dot topological laser

, 2022
Various topological laser concepts have recently enabled the demonstration of robust light-emitting devices that are immune to structural deformations and tolerant to fabrication imperfections. Current realizations of photonic cavities with topological boundaries are often limited by outcoupling issues or poor directionality and require complex design ...
Tian, Jingyi, Tan, Qi Ying, Wang, Yutao, Yang, Yihao, Yuan, Guanghui, Adamo, Giorgio, Soci, Cesare   +6 more
openaire   +2 more sources

The Application of Perovskite Quantum Dots in Photodetectors

Journal of Physics: Conference Series, 2021
Abstract Perovskite quantum dots (PQDs) can adsorb visible light and give out fluorescence or excited electron to the surroundings. Therefore, some kinds of PQDs can be used for light detection. Due to the appropriate band gap, cesium bromide and iodide-based perovskite PQDs (i.e.
openaire   +1 more source

Omnipolar Magnetic Field Detection by Superlattice‐Based Hall Sensor

Advanced Functional Materials, EarlyView.
Magnetic‐field‐induced electronic switching is demonstrated in unit‐cell‐engineered La0.7Sr0.3MnO3–BiFeO3 superlattices. Distinct substrate terminations modify magnetic and transport properties. Hall resistance measurements show omnipolar, hysteretic anomalous Hall switching above the Curie temperature, arising from Fe─Mn interfacial exchange, enabling
Mark Huijben, Nicolas Gauquelin, Arno Annys, Zhaoliang Liao, Jo Verbeeck, Guus Rijnders, Gertjan Koster   +6 more
wiley   +1 more source

Cost-efficient, Effect of Low-Quality PbI₂ Purification to Enhance Performances of Perovskite Quantum Dots and Perovskite Solar Cells

Energies, 2021
In modern society, high-quality material development and a large stable supply are key to perform frontier research and development. However, there are negative issues to address to utilize high-quality resources with a large stable supply for research ...
ChaeHyun Lee, YeJi Shin, Gyeong G. Jeon, Dongwoo Kang, Jiwon Jung, Byeongmin Jeon, Jongin Park, Jincheol Kim, Seog Joon Yoon   +8 more
doaj   +1 more source

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

Perovskite quantum dot one-dimensional topological laser

Nature Communications, 2023
AbstractVarious topological laser concepts have recently enabled the demonstration of robust light-emitting devices that are immune to structural deformations and tolerant to fabrication imperfections. Current realizations of photonic cavities with topological boundaries are often limited by outcoupling issues or poor directionality and require complex
Jingyi Tian, Qi Ying Tan, Yutao Wang, Yihao Yang, Guanghui Yuan, Giorgio Adamo, Cesare Soci   +6 more
openaire   +4 more sources

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