The discovery of a superhard P-type transparent semiconductor: Al2.69B50

Zheng, Xu1,2,3; Yan, Dayu1,2; Yi, Changjiang1,2; Zhu, Jinlong4; Zhang, Qinghua1,2; Zhai, Junyi5; Ma, Teng6; Zhu, Pinwen6; Li, Hui1,2; Gu, Lin1,2,7; Zhao, Yusheng4; Yao, Yugui3; Shi, Youguo1,2; Yu, Xiaohui1,2; Jin, Changqing1,2

2021-11-01

10.1039/d1mh00975c

Materials Horizons   影响因子和分区

2051-6347

2051-6355

Superhard semiconductors have been long sought after for electronic device applications enduring extreme conditions, such as astronautics, due to their intrinsic toughness, high thermal and chemical stability. Here, we report the superhard p-type semiconductor Al2.69B50 single crystal with the determined Vickers hardness of similar to 40.5 GPa under the load of 0.49 N, which is one of the hardest semiconductor compounds that have been ever found. With the direct band gap of 2.3 eV, Al2.69B50 exhibits excellent optical transmittance (>90%), covering the visible range from 459 nm to 760 nm and part of the infrared range, and also shows the high intensity of the photon emission in the visible light. Al2.69B50 is very stable, thermally and chemically, with an ultra-low density of similar to 2.52 g cm(-3), allowing for further extension of its applications. Such an assembly of various excellent properties within one material has great implication for high power electronic design and applications.

SCI ; EI

英语

其他

National Key R&D Program of China["2021YFA1400300","2016YFA0401503","2017YFA0302900","2018YFA0305700","2016YFA0300604"] ; China Postdoctoral Science Foundation[2019TQ0039] ; National Natural Science Foundation of China[11921004,11820101003,"U2032220","U2032204"] ; K. C. Wong Education Foundation[GJTD-2018-01] ; Youth Innovation Promotion Association of Chinese Academy of Sciences[2016006] ; Beijing Nature Science Foundation[2202059] ; Guangdong Innovative & Entrepreneurial Research Team Program[2016ZT06C279] ; Shenzhen Peacock Plan[KQTD2016053019134356] ; Chinese Academy of Sciences["KJCX2-SWN20","KJCX2-SW-N03","XDB33000000","XDB25000000","QYZDBSSW-SLH013"]

Chemistry ; Materials Science

Chemistry, Multidisciplinary ; Materials Science, Multidisciplinary

WOS:000728257200001

ROYAL SOC CHEMISTRY

20220811682848

Aluminum compounds ; Chemical stability ; Energy gap ; Single crystals

Chemistry:801 ; Crystalline Solids:933.1

Web of Science

1.Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China
2.Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China
3.Beijing Inst Technol, Sch Phys, Beijing 100081, Peoples R China
4.South Univ Sci & Technol China, Dept Phys, Shenzhen 518055, Peoples R China
5.Chinese Acad Sci, Beijing Inst Nanoenergy & Nanosyst, Beijing 100083, Peoples R China
6.Jilin Univ, Coll Phys, State Key Lab Superhard Mat, Changchun 130012, Peoples R China
7.Collaborat Innovat Ctr Quantum Matter, Beijing 100190, Peoples R China

Zheng, Xu,Yan, Dayu,Yi, Changjiang,et al. The discovery of a superhard P-type transparent semiconductor: Al2.69B50[J]. Materials Horizons,2021,9:748-755.

Zheng, Xu.,Yan, Dayu.,Yi, Changjiang.,Zhu, Jinlong.,Zhang, Qinghua.,...&Jin, Changqing.(2021).The discovery of a superhard P-type transparent semiconductor: Al2.69B50.Materials Horizons,9,748-755.

Zheng, Xu,et al."The discovery of a superhard P-type transparent semiconductor: Al2.69B50".Materials Horizons 9(2021):748-755.