New Family of Two-Dimensional Ternary Photoelectric Materials

Xu, Wangping1,2,3; Wang, Rui1; Zheng, Baobing2,3,4,5; Wu, Xiaozhi1; Xu, Hu2,3

2019-04-17

10.1021/acsami.9b00969

ACS Applied Materials & Interfaces   影响因子和分区

1944-8244

1944-8252

Screening unique two-dimensional (2D) materials with high mobility and applicable band gaps is motivated by not only the interest in basic science but also the practical applications for photoelectric materials. In this work, we have systematically studied a new family of 2D ternary quintuple layers (QLs), named ABC (A = Na, K, and Rb; B = Cu, Ag, and Au; C = S, Se, and Te). Our results indicate that the QLs of KCuTe, KAgS, KAgSe, KAuTe, RbCuTe, RbAgSe, and RbAgTe host direct band gaps. Moreover, KCuTe, RbCuTe, and RbAgTe QLs show extremely high mobilities of similar to 10(4) cm(2) V-1 s(-1). Interestingly, the linear scaling between exciton binding energy and quasiparticle band gap for ABC QLs exhibits an unexpected deviation with the 1/4 law. In addition, KAgSe, KAgS, RbAgSe, and RbAgTe show outstanding power energy conversion efficiencies of up to 21.5%, suggesting that they are good potential donor materials. Our results provide many potential candidates for applications in photoelectric materials, which may be realized in experiments due to the possible exfoliation from their parent compounds.

2D photoelectric materials carrier mobility exciton binding energy power conversion efficiency first-principles calculations

SCI ; EI

英语

通讯

Science, Technology and Innovation Commission of Shenzhen Municipality[ZDSYS20170303165926217]

Science & Technology - Other Topics ; Materials Science

Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary

WOS:000465189000072

AMER CHEMICAL SOC

20191606806000

Binding energy ; Calculations ; Carrier mobility ; Conversion efficiency ; Copper compounds ; Energy gap ; Excitons ; Gold compounds ; Photoelectricity ; Rubidium compounds ; Selenium compounds ; Semiconductor quantum wells ; Tellurium compounds

Energy Conversion Issues:525.5 ; Electricity: Basic Concepts and Phenomena:701.1 ; Semiconducting Materials:712.1 ; Semiconductor Devices and Integrated Circuits:714.2 ; Physical Chemistry:801.4 ; Mathematics:921

Web of Science

1.Chongqing Univ, Dept Phys, Chongqing 401331, Peoples R China
2.Southern Univ Sci & Technol, Dept Phys, Shenzhen 518055, Peoples R China
3.Southern Univ Sci & Technol, Shenzhen Key Lab Quantum Sci & Engn, Shenzhen 518055, Peoples R China
4.Baoji Univ Arts & Sci, Coll Phys & Optoelect Technol, Baoji 721016, Peoples R China
5.Baoji Univ Arts & Sci, Adv Titanium Alloys & Funct Coatings Cooperat Inn, Baoji 721016, Peoples R China

Xu, Wangping,Wang, Rui,Zheng, Baobing,et al. New Family of Two-Dimensional Ternary Photoelectric Materials[J]. ACS Applied Materials & Interfaces,2019,11(15):14457-14462.

Xu, Wangping,Wang, Rui,Zheng, Baobing,Wu, Xiaozhi,&Xu, Hu.(2019).New Family of Two-Dimensional Ternary Photoelectric Materials.ACS Applied Materials & Interfaces,11(15),14457-14462.

Xu, Wangping,et al."New Family of Two-Dimensional Ternary Photoelectric Materials".ACS Applied Materials & Interfaces 11.15(2019):14457-14462.