High performance p-type transparent LaCuOS thin film fabricated through a hydrogen-free method

Zhang, Nengduo; Shi, Danli; Liu, Xixia; Annadi, Anil; Tang, Baoshan; Huang, Tang Jiao; Gong, Haimei

doi:10.1016/j.apmt.2018.08.003

Cited by 7 publications

(14 citation statements)

References 43 publications

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“…This might impede the p-type performance of oxychalcogenides such as H, which is known to be an n-type dopant, and might be accidentally incorporated in the deposited thin film. Therefore, the absence of H 2 S in that work not only serves to be more environmental friendly, but also improves the p-type conductivity, and the intrinsic conductivity in that work is as high as 0.3 S•cm −1 [196]. [196].…”

Section: Oxychalcogenidesmentioning

confidence: 91%

“…Therefore, the absence of H 2 S in that work not only serves to be more environmental friendly, but also improves the p-type conductivity, and the intrinsic conductivity in that work is as high as 0.3 S•cm −1 [196]. [196]. Copyright 2018 Elsevier.…”

Section: Oxychalcogenidesmentioning

confidence: 99%

“…Such a conventional thin-film fabrication method has the drawback of time-consuming target preparation and the necessity of the use of H 2 S during film deposition for both PLD and sputtering. Later, in 2018, Zhang et al successfully prepared a LaCuOS film via a hydrogen-free method without using H 2 S, and the schematic illustration of the fabrication process is shown in Figure 9 [196]. More importantly, the hydrogen-containing gas H 2 S was normally used in the thin film deposition process prior to that work.…”

Section: Oxychalcogenidesmentioning

confidence: 99%

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Transparent p-Type Semiconductors: Copper-Based Oxides and Oxychalcogenides

2019

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While p-type transparent conducting materials (TCMs) are crucial for many optoelectronic applications, their performance is still not satisfactory. This has impeded the development of many devices such as photovoltaics, sensors, and transparent electronics. Among the various p-type TCMs proposed so far, Cu-based oxides and oxychalcogenides have demonstrated promising results in terms of their optical and electrical properties. Hence, they are the focus of this current review. Their basic material properties, including their crystal structures, conduction mechanisms, and electronic structures will be covered, as well as their device applications. Also, the development of performance enhancement strategies including doping/co-doping, annealing, and other innovative ways to improve conductivity will be discussed in detail.

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Section: Oxychalcogenidesmentioning

confidence: 91%

Section: Oxychalcogenidesmentioning

confidence: 99%

Section: Oxychalcogenidesmentioning

confidence: 99%

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Transparent p-Type Semiconductors: Copper-Based Oxides and Oxychalcogenides

2019

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“…6 Cu-based oxides and oxychalcogenides comprise a promising class of transparent conductors, 7 and LaCuOS has been studied in this context. [7][8][9][10] This class of materials presents composition complexity for which combinatorial methods could accelerate materials exploration and understanding. Among the challenges in combinatorial library synthesis is anion stoichiometry control, for which deposition strategies have been developed, e.g.…”

Section: Introductionmentioning

confidence: 99%

“…1 atm S vapor. 8 The present work uses a similar strategy of depositing precursor oxide thin films with subsequent sulfurization, using La-Bi-Cu composition libraries to combinatorially explore the synthesis space using flowing H 2 S to incorporate S at lower processing temperatures.…”

Section: Introductionmentioning

confidence: 99%

Combinatorial Synthesis of Oxysulfides in the Lanthanum–Bismuth-Copper System

et al. 2020

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Establishing synthesis methods for a target material comprises a grand challenge in materials research, which is compounded with use-inspired specifications on the format of the material. Solar photochemistry using thin film materials is a promising technology for which many complex materials are being proposed, and the present work describes application of combinatorial methods to explore the synthesis of predicted La-Bi-Cu oxysulfide photocathodes, in particular alloys of LaCuOS and BiCuOS. The variation in concentration of 3 cations and 2 anions in thin film materials, and crystallization thereof, is achieved by a combination of reactive sputtering and thermal processes including reactive annealing and rapid thermal processing. Composition and structural characterization establish composition-processing-structure relationships that highlight the breadth of processing conditions required for synthesis of LaCuOS and BiCuOS. The relative irreducibility of La oxides and limited diffusion indicate the need for high temperature processing, which conflicts with the temperature limits for mitigating evaporation of Bi and S. Collectively the results indicate that alloys of these phases will require reactive annealing protocols that are uniquely tailored to each composition, motivating advancement of dynamic processing capabilities to further automate discovery of synthesis routes.

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