Growth of Millimeter Size B6O Single Crystals in a B-H3BO3 System at High Pressure and High Temperature

Han, Yunxia1,2; He, Duanwei1,2; Ma, Dejiang3; Wang, Qiming1,2; Zhao, Yusheng3; Wang, Shanmin3; Jiang, Mingquan1,2; Li, Xin1,2; Zhang, Jiawei1,2

2020-06-03

10.1021/acs.cgd.0c00010

CRYSTAL GROWTH & DESIGN   影响因子和分区

1528-7483

1528-7505

We report high-pressure synthesis of single-crystal boron suboxide (B6O), one of the superhard materials, using a reaction route between B and H3BO3 at 3-5.5 GPa and 600-2200 degrees C. At optimized pressure and temperature conditions of 5.5 GPa and 2100 degrees C, large B6O single crystals can be obtained with a crystallite size of more than 2 mm. Boric acid (H3BO3) was used as a starting material because it is easily decomposed into B2O3 and H2O at a lower temperature. The B2O3 produced by the decomposition should have a small particle size and thus have high reactivity, and the reaction byproduct H2O provides a good hydrostatic environment for the growth of B6O. Therefore, it is easier to synthesize and grow B6O by using a B-H3BO3 system as reaction raw materials. This work discussed the B6O growth mechanism in detail. In addition, photoluminescence experiments and first-principles calculations show that B6O is a direct band gap semiconductor material with good orange-red emission characteristics (the band gap is 1.83 eV). The results of this study indicate a method to grow large B6O single crystals that have great potential use in industrial applications.

SCI ; EI

英语

其他

National Key R&D Program of China[2018YFA0305900] ; National Natural Science Foundation of China[51472171][11427810] ; Key Research Platforms and Research Projects of Universities in Guangdong Province[2018KZDXM062] ; Guangdong Innovative & Entrepreneurial Research Team Program[2016ZT06C279] ; Shenzhen Peacock Plan[KQTD2016053019134356]

Chemistry ; Crystallography ; Materials Science

Chemistry, Multidisciplinary ; Crystallography ; Materials Science, Multidisciplinary

WOS:000538515500019

AMER CHEMICAL SOC

CHEMISTRY

Web of Science

1.Sichuan Univ, Inst Atom & Mol Phys, Chengdu 610065, Sichuan, Peoples R China
2.Sichuan Univ, Key Lab High Energy Dens Phys & Technol, Minist Educ, Chengdu 610065, Sichuan, Peoples R China
3.Southern Univ Sci & Technol, Dept Phys, Shenzhen 518055, Peoples R China

Han, Yunxia,He, Duanwei,Ma, Dejiang,et al. Growth of Millimeter Size B6O Single Crystals in a B-H3BO3 System at High Pressure and High Temperature[J]. CRYSTAL GROWTH & DESIGN,2020,20(6):3732-3736.

Han, Yunxia.,He, Duanwei.,Ma, Dejiang.,Wang, Qiming.,Zhao, Yusheng.,...&Zhang, Jiawei.(2020).Growth of Millimeter Size B6O Single Crystals in a B-H3BO3 System at High Pressure and High Temperature.CRYSTAL GROWTH & DESIGN,20(6),3732-3736.

Han, Yunxia,et al."Growth of Millimeter Size B6O Single Crystals in a B-H3BO3 System at High Pressure and High Temperature".CRYSTAL GROWTH & DESIGN 20.6(2020):3732-3736.