journal article·2021-09

Electrical conductivity and effects of mechanical bending of flexible amorphous transparent conducting CdO-Ga2O3 films synthesized by room temperature sputtering

Ying Wang, Chung Yan Lo, Yeung Sum Wong, Cheuk Kai Gary Kwok, Sujit Kumer Shil, Kin Man Yu

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Abstract

Abstract Recently, amorphous ionic oxide semiconductors (AIOSs) have attracted much attention as materials for a wide range of next-generation flexible and transparent optoelectronic devices. Despite their amorphous nature, AIOSs are highly conducting due to their high mobility (>10 cm2/V-s) and electron concentration. Typically, they are grown at low temperature with large area uniformity, and hence are compatible with the fabrication of flexible and organic devices. In this study, we synthesize a new class of AIOS, CdO-Ga2O3 alloys on both glass and polyethylene terephthalate (PET) substrates by radio frequency magnetron sputtering at room temperature and explore their properties for flexible electronic applications. Our experimental results show that Cd1−xGaxO1+δ alloy films are amorphous with Ga content x>0.3 and within the amorphous composition range of 0.3
Source: openaire · Quality: candidate unverified · Source record ↗

Research context

OpenAlex topics: Ga2O3 and related materials · ZnO doping and properties · Thin-Film Transistor Technologies

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References (39)

Show source-provided references
1. Frontier of transparent conductive oxide thin films10.1016/S0042-207X(02)00165-3 ↗
2. n-Type doped transparent conducting binary oxides: an overview10.1039/C6TC01881E ↗
3. Transparent electrodes for efficient optoelectronics10.1002/aelm.201600529 ↗
4. Ginley · 2011
5. Sputtered SrxNbO3 as a UV-transparent conducting film10.1021/acsami.0c04854 ↗
6. Optical transmission and carrier transport of epitaxial (001)- and (111)-oriented Ba0.96La0.04SnO3 thin films10.1016/j.ceramint.2019.10.067 ↗
7. High electrical conducting deep-ultraviolet-transparent oxide semiconductor La-doped SrSnO3 exceeding ~3000 S cm−110.1063/1.5128410 ↗
8. Isotropic magnetoresistance and enhancement of ferromagnetism through repetitious bending moments in flexible perovskite manganite thin film10.1016/j.jallcom.2019.07.207 ↗
9. Recent advances in flexible organic light-emitting diodes10.1039/C6TC03230C ↗
10. TCO/Ag/TCO transparent electrodes for solar cells application10.1007/s00339-014-8222-9 ↗
11. An indium tin oxide-free polymer solar cell on flexible glass10.1021/am5071909 ↗
12. TCO/metal/TCO structures for energy and flexible electronics10.1016/j.tsf.2011.06.091 ↗
13. Room-temperature fabrication of transparent flexible thin-film transistors using amorphous oxide semiconductors10.1038/nature03090 ↗
14. Ideal transparent conductors for full spectrum photovoltaics10.1063/1.4729563 ↗
15. Ionic amorphous oxide semiconductors: material design, carrier transport, and device application10.1016/j.jnoncrysol.2006.01.073 ↗
16. Structure, morphology, and optical properties of amorphous and nanocrystalline gallium oxide thin films10.1021/jp311300e ↗
17. Past achievements and future challenges in the development of optically transparent electrodes10.1038/nphoton.2012.282 ↗
18. Ultraflexible polymer solar cells using amorphous zinc-indium-tin oxide transparent electrodes10.1002/adma.201302303 ↗
19. Wide-bandgap semiconductor materials: for their full bloom10.7567/JJAP.54.030101 ↗
20. Comparative investigation of fracture behaviour of aluminium-doped ZnO films on a flexible substrate10.1088/0022-3727/42/17/175404 ↗
21. Tuning the properties of transparent oxide conductors. Dopant ion size and electronic structure effects on CdO-based transparent conducting oxides. Ga- and In-doped CdO thin films grown by MOCVD10.1021/cm702588m ↗
22. Widely bandgap tunable amorphous Cd-Ga-O oxide semiconductors exhibiting electron mobilities ≥ 10 cm2 V−1 s−110.1063/1.4913691 ↗
23. DC sputter deposition of amorphous indium–gallium–zinc–oxide (a-IGZO) films with H2O introduction10.1016/j.tsf.2009.09.176 ↗
24. The remarkable thermal stability of amorphous in-Zn-O transparent conductors10.1002/adfm.200700604 ↗
25. General mobility and carrier concentration relationship in transparent amorphous indium zinc oxide films10.1103/PhysRevB.77.115215 ↗
26. An indium-free anode for large-area flexible OLEDs: defect-free transparent conductive zinc tin oxide10.1002/adfm.201503753 ↗
27. Room-temperature-synthesized high-mobility transparent amorphous CdO-Ga2O3 alloys with widely tunable electronic bands10.1021/acsami.7b18254 ↗
28. Electrical and optical degradation studies on AZO thin film under cyclic bending10.1109/TDMR.2012.2236888 ↗
29. Robustness and electrical reliability of AZO/Ag/AZO thin film after bending stress10.1016/j.solmat.2017.02.037 ↗
30. High-performance flexible ZnO thin-film transistors by atomic layer deposition10.1109/LED.2019.2895864 ↗
31. Effect of bending on resistive switching of NiO/ZnO nanocomposite thin films10.1016/j.jallcom.2017.03.196 ↗
32. Influence of strain on the electrical resistance of zinc oxide doped thin film deposited on polymer substrate10.1002/1527-2648(20020806)4:8<610::AID-ADEM610>3.0.CO;2-1 ↗
33. Defects and properties of cadmium oxide based transparent conductors10.1063/1.4948236 ↗
34. Fundamental limits on optical transparency of transparent conducting oxides: Free-carrier absorption in SnO210.1063/1.3671162 ↗
35. Advantages of transparent conducting oxide thin films with controlled permittivity for thin film photovoltaic solar cells10.1016/j.tsf.2011.01.143 ↗
36. Effects of free carriers on the optical properties of doped CdO for full-spectrum photovoltaics10.1103/PhysRevApplied.6.064018 ↗
37. Mechanics of rollable and foldable film-on-foil electronics10.1063/1.123478 ↗
38. The effect of bending on the electrical and optical characteristics of aluminum-doped ZnO films deposited on flexible substrates10.1149/2.018301jss ↗
39. Strain-dependent electrical resistance of tin-doped indium oxide on polymer substrate10.1063/1.126052 ↗