The Role of Cation Coordination in the Electrical and Optical Properties of Amorphous Transparent Conducting Oxides
The Role of Cation Coordination in the Electrical and Optical Properties of Amorphous Transparent Conducting Oxides
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阳离子配位在非晶透明导电氧化物电学和光学性质中的作用
DOI:
10.1021/acs.chemmater.0c01672
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发表时间:
2020
影响因子:
8.6
通讯作者:
Bertoni, Mariana I.
中科院分区:
文献类型:
--
作者:
Husein, Sebastian;Medvedeva, Julia E.;Perkins, John D.;Bertoni, Mariana I.
Amorphous oxide semiconductor materials have demonstrated numerous advantages without compromise of electrical properties as compared to their crystalline counterparts, yet understanding of the fundamental principles allowing this has remained elusive. To study the origins of enhanced optoelectronic properties, we apply high-throughput, combinatorial sputtering, structural and spectral mapping, and computationally intensiveab initiomolecular dynamics simulations with density functional theory to a ternary, post-transition metal oxide system, namely, zinc tin oxide. The deposited thin films exhibit a high figure of merit, achieving carrier densities in the range of 1019to 1020cm–3and carrier mobilities up to 35 cm2/Vs. These results highlight the role of local distortions and cation coordination in determining the microscopic origins of carrier generation and transport. In particular, we identify the strong likelihood of Sn undercoordination in both Zn-poor and Zn-rich phases leading to the high carrier concentrations observed. This not only diverges from the still widespread historical indictment of oxygen vacancies controlling carrier population in crystalline oxides but also provides a comprehensive framework to describe the unique structure–property relationships using specific structural and electronic descriptors in disordered phase materials.
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影响因子:
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作者:
Chi Wang;Chen Shih;Jenn‐Ming Wu;Wei Chao;H. Bor
通讯作者:
H. Bor
影响因子:
64.8
作者:
Nomura, K;Ohta, H;Hosono, H
通讯作者:
Hosono, H
影响因子:
4
作者:
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影响因子:
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作者:
Muydinov, Ruslan;Steigert, Alexander;Szyszka, Bernd
通讯作者:
Szyszka, Bernd
DOI:
--
发表时间:
2016
期刊:
影响因子:
--
作者:
M. Wahila;K. Butler;Zachary W. Lebens;Christopher H. Hendon;Abhishek Nandur;Robert E. Treharne;N. Quackenbush;S. Sallis;K. Mason;H. Paik;D. Schlom;J. Woicik;Jinghua Guo;D. Arena;B. White;G. Watson;A. Walsh;L. Piper
通讯作者:
L. Piper