Abstract Based on ab initio density functional theory calculations, we demonstrate that two carbon-doped boron nitride analog of α-graphyne structures, B3C2N3 and BC6N monolayers, are two-dimensional direct wide band gap semiconductors, and there are two inequivalent valleys in the vicinities of the vertices of their hexagonal Brillouin zones. Besides, B3C2N3 and BC6N monolayers exhibit relatively high carrier mobilities, and their direct band gap feature is robust against the biaxial strain. More importantly, the energetically most favorable B3C2N3 and BC6N bilayers also have direct wide band gaps, and valley polarization could be achieved by optical helicity. Finally, we show that BC6N monolayer might have high efficiency in photo-splitting reactions of water, and a vertical van der Waals heterostructure with a type-Ⅱ energy band alignment could be designed using B3C2N3 and BC6N monolayers. All the above-mentioned characteristics make B3C2N3 and BC6N monolayers, bilayers, and their heterostructures recommendable candidates for applications in valleytronic devices, metal-free photocatalysts, and photovoltaic cells.
Received: 17 December 2020
Revised: 14 January 2021
Accepted manuscript online: 20 January 2021
PACS:
71.15.Mb
(Density functional theory, local density approximation, gradient and other corrections)
Fund: Project supported by the Special Foundation for Theoretical Physics Research Program of China (Grant No. 11847065) and the Natural Science Foundation of Shanxi Province, China (Grant No. 201901D211115).
Corresponding Authors:
Bo Chen
E-mail: chenbo@tyut.edu.cn
Cite this article:
Bo Chen(陈波), Xiang-Qian Li(李向前), Lin Xue(薛林), Yan Han(韩燕), Zhi Yang(杨致), and Long-Long Zhang(张龙龙) First-principles investigation of the valley and electrical properties of carbon-doped α-graphyne-like BN sheet 2021 Chin. Phys. B 30 057101
[1] Schaibley J R, Yu H Y, Clark G, Rivera P, Ross J S, Seyler K L, Yao W and Xu X D 2016 Nat. Rev. Mater.1 16055 [2] Xu X D, Yao W, Xiao D and Heinz T F 2014 Nat. Phys.10 343 [3] Xiao D, Liu G B, Feng W X, Xu X D and Yao W 2012 Phys. Rev. Lett.108 196802 [4] Xiao D, Yao W and Niu Q 2007 Phys. Rev. Lett.99 236809 [5] Yao W, Xiao D and Niu Q 2008 Phys. Rev. B77 235406 [6] Xiao D, Chang M C and Niu Q 2010 Rev. Mod. Phys.82 1959 [7] Mak K F, He K L, Shan J and Heinz T F 2012 Nat. Nanotechnol.7 494 [8] Zeng H L, Dai J F, Yao W, Xiao D and Cui X D 2012 Nat. Nanotechnol.7 490 [9] Cao T, Wang G, Han W P, Ye H Q, Zhu C R, Shi J R, Niu Q, Tan P H, Wang E G, Liu B L and Feng J 2012 Nat. Commun.3 887 [10] Radisavljevic B, Radenovic A, Brivio J, Giacometti V and Kis A 2011 Nat. Nanotechnol.6 147 [11] Yun W S, Han S W, Hong S C, Kim I G and Lee J D 2012 Phys. Rev. B85 033305 [12] Singh R S, Tay R Y, Chow W L, Tsang S H, Mallick G and Teo E H T 2014 Appl. Phys. Lett.104 163101 [13] Mahvash F, Paradis E, Drouin D, Szkopek T and Siaj M 2015 Nano Lett.15 2263 [14] Kaloni T P, Joshi R P, Adhikari N P and Schwingenschlogl U 2014 Appl. Phys. Lett.104 073116 [15] Song Z G, Lips Z W, Wang H, Bai X D, Wang W L, Du H L, Liu S Q, Wang C S, Han J Z, Yang Y C, Liu Z, Lu J, Fang Z Y and Yang J B 2017 Nano Lett.17 2079 [16] Kresse G and Furthmüller J 1996 Comput. Mater. Sci.6 15 [17] Blöchl P E 1994 Phys. Rev. B50 17953 [18] Kresse G and Joubert D 1999 Phys. Rev. B59 1758 [19] Perdew J P, Burke K and Ernzerhof M 1996 Phys. Rev. Lett.77 3865 [20] Hestenes M R and Stiefel E 1952 J. Res. Natl. Bur. Stand.49 409 [21] Özçelik V O, Aktürk O Ü, Durgun E and Ciraci S 2015 Phys. Rev. B92 125420 [22] Heyd J, Scuseria G E and Ernzerhof M 2003 J. Chem. Phys.118 8207 [23] Togo A, Oba F and Tanaka I 2008 Phys. Rev. B78 134106 [24] Gonze X and Lee C 1997 Phys. Rev. B55 10355 [25] Nóse S 1984 J. Chem. Phys.81 511 [26] Hoover W G 1985 Phys. Rev. A31 1695 [27] Grimme S, Antony J, Ehrlich S and Krieg H 2010 J. Chem. Phys.132 154104 [28] Grimme S, Ehrlich S and Goerigk L 2011 J. Comput. Chem.32 1456 [29] Marzari N and Vanderbilt D 1997 Phys. Rev. B56 12847 [30] Wu Q S, Zhang S N, Song H F, Troyer M and Soluyanov A A 2018 Comput. Phys. Commun.224 405 [31] Wang V, Xu N, Liu J C, Tang G and Geng W T 2019 arXiv:1908.08269 [32] Singh N B, Bhattacharya B and Sarkar U 2014 Struct. Chem.25 1695 [33] Mouhat F and Coudert F X 2014 Phys. Rev. B90 224104 [34] Jiao L, Hu M, Peng Y, Luo Y, Li C and Chen Z 2016 J. Solid State Chem.244 120 [35] Lee C, Wei X D, Kysar J W and Hone J 2008 Science321 385 [36] Özçelik V O and Ciraci S 2013 J. Phys. Chem. C117 2175 [37] Di Quarto F, Sunseri C, Piazza S and Romano M C 1997 J. Phys. Chem. B101 2519 [38] Qiao L, Zhang S, Xiao H Y, Singh D J, Zhang K H L, Liu Z J, Zu X T and Li S 2018 J. Mater. Chem. C6 1239 [39] Thouless D J, Kohmoto M, Nightingale M P and den Nijs M 1982 Phys. Rev. Lett.49 405 [40] Yao Y, Kleinman L, MacDonald A H, Sinova J, Jungwirth T, Wang D S, Wang E and Niu Q 2004 Phys. Rev. Lett.92 037204 [41] Feng W X, Yao Y G, Zhu W G, Zhou J J, Yao W and Xiao D 2012 Phys. Rev. B86 165108 [42] Peng B, Zhang H, Shao H Z, Xu Y F, Zhang R J and Zhua H Y 2016 J. Mater. Chem. C4 3592 [43] Luo Y Z, Hu Y B and Xie Y Q 2019 J. Mater. Chem. A7 27503 [44] Bardeen J and Shockley W 1950 Phys. Rev.80 72 [45] Chen J M, Xi J Y, Wang D and Shuai Z G 2013 J. Phys. Chem. Lett.4 1443 [46] Phuc H V, Hieu N N, Hoi B D, Hieu N V, Thu T V, Hung N M, Ilyasov V V, Poklonski N A and Nguyen C V 2018 J. Electron. Mater.47 730 [47] ahin H, Cahangirov S, Topsakal M, Bekaroglu E, Akturk E, Senger R T and Ciraci S 2009 Phys. Rev. B80 155453 [48] Zheng H, Li X B, Chen N K, Xie S Y, Tian W Q, Chen Y P, Xia H, Zhang S B and Sun H B 2015 Phys. Rev. B92 115307 [49] Chakrapani V, Angus J C, Anderson A B, Wolter S D, Stoner B R and Sumanasekera G U 2007 Science318 1424 [50] Behzad S 2016 Solid State Commun.248 27 [51] Zhang Y N, Yun J N, Wang K Y, Chen X H, Yang Z, Zhang Z Y, Yan J F and Zhao W 2017 Comput. Mater. Sci.136 12 [52] Sun S B, Dan J C, Xie X, Yu Y, Yang L L, Xiao S, Wu S Y, Peng K, Song F L, Wang Y N, Yang J N, Qian C J, Zuo Z C and Xu X L 2020 Chin. Phys. Lett.37 087801 [53] Xu L X, Lu W G, Hu C, Guo Q X, Shang S, Xu X L, Yu G H, Yan Y, Wang L H and Teng J 2020 Chin. Phys. B29 077304
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