文献类型：期刊文献

英文题名：Pressure-stimulus-responsive behaviors of core-shell InP/ZnSe nanocrystals: remarkable piezochromic luminescence and structural assembly

作者：Liu, Hao[1,2];Wang, Yixuan[1];Yang, Xinyi[1];Zhao, Xiaohui[1];Wang, Kai[1];Wu, Min[1];Zuo, Xiaobing[3];Yang, Wenge[4];Sui, Yongming[1];Zou, Bo[1]

第一作者：刘华;Liu, Hao

通讯作者：Yang, XY[1];Sui, YM[1];Zou, B[1]

机构：[1]Jilin Univ, Coll Phys, State Key Lab Superhard Mat, Changchun 130012, Peoples R China;[2]Xinxiang Univ, Sch Phys & Elect Engn, Xinxiang 453003, Henan, Peoples R China;[3]Argonne Natl Lab, Adv Photon Source, Xray Sci Div, Lemont, IL 60439 USA;[4]Ctr High Pressure Sci & Technol Adv Res, Beijing 100094, Peoples R China

第一机构：Jilin Univ, Coll Phys, State Key Lab Superhard Mat, Changchun 130012, Peoples R China

通讯机构：[1]corresponding author), Jilin Univ, Coll Phys, State Key Lab Superhard Mat, Changchun 130012, Peoples R China.

年份：0

外文期刊名：NANOSCALE

收录：;EI(收录号：20222012106945);Scopus(收录号：2-s2.0-85129939373);WOS:【SCI-EXPANDED(收录号:WOS:000788240400001)】；

基金：This study was supported by the National Natural Science Foundation of China (No. 11874027, 21725304, and 11774124), Chang Jiang Scholars Program of China (No. T2016051), and China Postdoctoral Science Foundation (No. 2019T120233 and 2017M621198). This study was performed mainly at BL15U1 at the Shanghai Synchrotron Radiation Facility. Parts of this study were performed at beamline 12-ID-B at the Advanced Photon Source, a US Department of Energy (DOE) Office of Science User Facility operated for the DOE Office of Science by Argonne National Laboratory under Contract DE-AC0206CH11357.

语种：英文

摘要：Piezochromic luminescence materials with optical properties can be adjusted (the colors most sensitive to the human eye range from red to green) to provide powerful means for information acquisition in various applications. Inorganic quantum dots, typically based on heavy metals such as cadmium and lead, have congenital advantages as luminescence materials, including strong inoxidizability and excellent photoelectric properties. However, small band-gap shifts under pressure have hindered the development of inorganic-based piezochromic materials. Herein, we combined in situ high-pressure photoluminescence (PL) and absorption measurements with synchrotron X-ray scattering spectra to elucidate the remarkable modulation of optical properties and morphologies by pressure, particularly that of the piezochromic luminescence, in all-inorganic core-shell InP/ZnSe nanocrystals (NCs). We observed a stepwise PL color change from red to green, and an ultrabroad bandgap tunability of 0.46 eV was observed from 1.99 to 2.45 eV in the pressure range of 14.2 GPa for InP/ZnSe NCs. Moreover, two-dimensional (2D) InP/ZnSe nanosheets were synthesized by the stress-driven attachment of nanoparticles. These results demonstrate the ability of the pressure-stimulus response to trigger remarkable piezochromic luminescence and 2D nanosheet assembly in InP/ZnSe NCs, which paves the way for new applications of all-inorganic InP-based semiconductor NCs.