3篇
您的检索式：作者名="Meilun Zhang"
|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Enabling ultranarrow blue emission linewidths in colloidal alloy quantum dots by decreasing the exciton fine structure splitting and exciton–phonon coupling显示文摘The realization of colloidal alloy quantum dots(QDs)with narrow spectral linewidths requires minimization of the contributions of inhomogeneous and homogeneous broadening to the ensemble spectrum.Recently,there has been remarkable progress in eliminating the inhomogeneous contribution by controlling the size distribution of the QDs.However,considerable challenges remain in suppressing the homogeneous broadening,in terms of both intrinsic principles and rational synthetic routes.We find that ground-state exciton fine structure splitting and exciton-phonon coupling play a pivotal role in the homogeneous broadening mechanism.Here we demonstrate that the elimination of the lattice mismatch strain by using a coherent strain structure can decrease the light-heavy hole splitting,thus suppressing the asymmetric broadening of the emission on the high energy side.Besides,the improvement of the uniformity of the alloy by using a stepwise ion exchange strategy can weaken the exciton-longitudinal optical(LO)-phonon interactions,further minimizing the homogeneous broadening.As a result,the final alloy QD products exhibit a widely tunable blue emission wavelength(445-470 nm)with the narrowest ensemble photoluminescence full width at half maximum(FWHM)of 10.1-13.5 nm(or 58.4-75.3 meV).Our study provides a potential strategy for other semiconductor nanocrystals with ultranarrow spectral linewidths. | Jinke Bai Linfeng Wang Tingting Zhang Tianyi Hou Meilun Zhang Bing Xu Dongyu Li Xiao Jin Qinghua Li Yuxiao Wang Xueru Zhang Yinglin Song | 2023 | Nano Research2023，16，1： | 0 |
| 2 | China Cultural Center in Den Haag:Achieving Accessibility-Oriented Communication and Creating Shared Space显示文摘Given that offline events are currently restrained by the COVID-19 outbreak,China Cultural Center(CCC)in Den Haag redesigned its strategy for China-Netherlands people-to-people ties to focus on online events,taking innovative measures to achieve accessibility-oriented communication and create shared space for cultural and tourism exchanges. | Zhang Qing Zhang Meilun | 2020 | China & The World Cultural Exchange2020，86，10： | 0 |
| 3 | Sidelights of Intangible Cultural Heritage Inheritance in the Netherlands显示文摘On December 8,2017,United Nations Educational Scientific and Cultural Organization(UNESCO)announced that the craft of the miller operating windmills and watermills of the Netherlands was officially inscribed on the Representative List of the Intangible Cultural Heritage of Humanity,marking the most influential efforts to protect and inherit the traditional windmill craftsmanship over the years. | Zhang Meilun Zhang Qing | 2021 | China & The World Cultural Exchange2021，87，4： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员