![]() ![]() The ASE in the blue range has never been previously achieved using traditional NCs with type I carrier localization. These properties enhance the lasing performance of inverted core-shell structures. We use these novel heteroNCs to demonstrate efficient amplified spontaneous emission (ASE) that is tunable across a “difficult” range of green and blue colors. Coreshell semiconducting nanocrystals (CSSNCs) are a class of materials which have properties intermediate between those of small, individual molecules and. Klimov, Contribution from the C-PCS, Chemistry DiVision, Center for Nonlinear Studies, Theoretical. Light Amplification Using Inverted Core/shell Nanocrystals: Towards Lasing in the Single-Exciton Regime. Klimov, Inverted core/shell nanocrystals continuously. This effect leads to reduced optical-gain thresholds and can potentially allow lasing in the single-exciton regime, for which Auger recombination is inactive. Synthesis and optical properties of core-multi-shell CdSe/CdS/ZnS quantum. We show that such hetero-NCs can exhibit strong repulsive excitonexciton interactions that lead to significantly reduced excited-state absorption associated with NCs containing single electron-hole pairs. Here we explore a novel approach to achieve NC lasing in the Auger-recombination-free regime by using type II NC heterostructures that promote spatial separation of electrons and holes. Inverted Core/Shell Nanocrystals Continuously Tunable between Type-I and Type-II Localization Regimes. 6, 2043320443 (2018) Balet, L.P., Ivanov, S.A., Piryatinski, A., Achermann, M., Klimov, V.I.: Inverted core/shell nanocrystals continuously tunable. High temperature sensitivity of manganese-assisted excitonic photoluminescence from inverted core/shell ZnSe:Mn/CdSe nanocrystals Yu, Xue-Feng Peng. The technological potential of NCs as lasing materials is, however, significantly diminished by highly efficient nonradiative Auger recombination of multiexcitons leading to ultrafast decay of optical gain. Generally, the core material has a narrower band gap than the shell, however for the so-called ‘‘inverted’’ coreshell QDs, the shell material has a narrower band gap than the core types 19, 20. Klimov, Nanocrystal Quantum Dots (CRC Press, Boca Raton, 2010). Not all references are currently linkable within the Digital Library.Size-controlled spectral tunability and chemical flexibility make semiconductor nanocrystals (NCs) attractive as nanoscale building blocks for color-selectable optical-gain media. We report a model on core-shell heterostructured nanocrystals with CdSe as the core. #Klimov inverted core shell full#Please check the article itself for the full list of references which may differ. Tunable magnetic exchange interactions in manganese-doped inverted core-shell ZnSe-CdSe nanocrystals. These are the references the publisher has listed as being connected to the article. Klimov VI: Inverted core/shell nanocrystals continuously tunable between type-I and type-II localization regimes. Springer Science and Business Media LLC (2009, January) Nature Materials Vol. A facile synthesis of mercaptanacid-capped CdTe/CdSe (core/shell) type II quantum dots in aqueous solution by means of a microwave-assisted approach is reported. (2009) Tunable magnetic exchange interactions in manganese-doped inverted core–shell ZnSe–CdSe nanocrystals. interactions are ‘inverted’ core-shell designs, wherein wide-gap semiconductor cores are overcoated with narrower-gap shells. Tunable magnetic exchange interactions in manganese-doped inverted core–shell ZnSe–CdSe nanocrystalsĭoi:10.1038/nmat2342 Search in ResearchGateīussian, David A., Crooker, Scott A., Yin, Ming, Brynda, Marcin, Efros, Alexander L., Klimov, Victor I. Search inside Nature Materials only Reference Type ![]()
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