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   https://doi.org/10.1002/adom.202201059  

   Lin, Yuankun; Hathaway, Evan; Habis, Fatimah; Wang, Yuanxi; Rodriguez, Roberto_Gonzalez; Alnasser, Khadijah; Hurley, Noah; Cui, Jingbiao (July 2022, Advanced Optical Materials)

   Abstract Realizing stimulated emission from defects in 2D‐layered semiconductors has the potential to enhance the sensitivity of characterizing their defects. However, stimulated emission from defects in layered materials presents a different set of challenges in carrier lifetime and energy level design and is not achieved so far. Here, photoluminescence (PL) spectroscopy, Raman spectroscopy, and first‐principles theory are combined to reveal an anomalous PL intensity–temperature relation and strong polarization effects at a defect emission peak in annealed multilayer MoS₂, suggesting defect‐based stimulated emission. The emergence of stimulated emission behavior is also controllable (by temperature) and reversible. The observed stimulated emission behavior is supported by a three‐level system involving two defect levels from chalcogen vacancies and a pump level from the conduction band edge. First‐principles calculations show that the special indirect gap that enables stimulated emission is not native to pristine bulk MoS₂and only emerges under thermal strain. 

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2. The Influence of Passivating Ligand Identity on Au ₂₅ (SR) ₁₈ Spin-Polarized Emission

   https://doi.org/10.1021/acs.jpclett.5c00723  

   Smith, Nathanael L; Herbert, Patrick J; Tofanelli, Marcus A; Knappenberger, Jane A; Ackerson, Christopher J; Knappenberger, Kenneth L (May 2025, The Journal of Physical Chemistry Letters)
3. Intense Dark Exciton Emission from Strongly Quantum-Confined CsPbBr ₃ Nanocrystals

   https://doi.org/10.1021/acs.nanolett.0c02714  

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4. Nonvolatile Control of Valley Polarized Emission in 2D WSe ₂ -AlScN Heterostructures

   https://doi.org/10.1021/acsnano.4c04684  

   Singh, Simrjit; Kim, Kwan-Ho; Jo, Kiyoung; Musavigharavi, Pariasadat; Kim, Bumho; Zheng, Jeffrey; Trainor, Nicholas; Chen, Chen; Redwing, Joan M; Stach, Eric A; et al (July 2024, ACS Nano)
5. Demonstration of Low Work Function Perovskite SrVO ₃ Using Thermionic Electron Emission

   https://doi.org/10.1002/adfm.202203703  

   Lin, Lin; Jacobs, Ryan; Chen, Dongzheng; Vlahos, Vasilios; Lu‐Steffes, Otto; Alonso, Jose_A; Morgan, Dane; Booske, John (August 2022, Advanced Functional Materials)

   Abstract Engineering a material's work function is of central importance for many technologies and in particular electron emitters used in high‐power vacuum electronics and thermionic energy converters. A low work function surface is typically achieved through unstable surface functional species, especially in high power thermionic electron emitter applications. Discovering and engineering new materials with intrinsic, stable low work functions obtainable without volatile surface species would mark a definitive advancement in the design of electron emitters. This work reports evidence for the existence of a low work function surface on a bulk, monolithic, electrically conductive perovskite oxide: SrVO₃. After considering the patch field effect on the heterogeneous emitting surface of the bulk polycrystalline samples, this study suggests the presence of low work function (≈2 eV) emissive grains on SrVO₃surface. Emission current densities of 10–100 mA cm^–2at ≈1000 °C, comparable to commercial LaB₆thermionic cathodes, indicative of an overall effective thermionic work function of 2.3–2.7 eV are obtained. This study demonstrates that perovskites like SrVO₃may have intrinsically low work functions comparable to commercialized W‐based dispenser cathodes and suggests that, with further engineering, perovskites may represent a new class of low work function electron emitters. 

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