Journal ArticleDOI
Temperature dependent electrical transport studies of self-aligned ZnO nanorods/Si heterostructures deposited by sputtering
TLDR
In this article, self-aligned ZnO nanorods (NRs) were grown on n-Si(100) substrate by RF sputtering techniques and the average diameter, height, and density of NRs were found 48'nm, 750'nm and 1.26'×'1010'cm−2, respectively.Abstract:
Self-aligned ZnO nanorods (NRs) were grown on n-Si(100) substrate by RF sputtering techniques. The NRs are uniformly grown on 2-inch wafer along [0001] direction. Single-crystalline wurtzite structure of ZnO NRs was confirmed by X-ray diffraction. The average diameter, height, and density of NRs are found 48 nm, 750 nm, and 1.26 × 1010 cm−2, respectively. The current-voltages (I-V) characteristics of ZnO NRs/Si heterojunction (HJ) were studied in the temperature range of 120–300 K and it shows a rectifying behavior. Barrier height (ϕB) and ideality factor (η) were estimated from thermionic emission model and found to be highly temperature dependent in nature. Richardson constant (A*) was evaluated using Richardson plot of ln(Io/T2) versus q/kT plot by linear fitting in two temperature range 120–180 K and 210–300 K. Large deviation in Richardson constant from its theoretical value of n-Si indicates the presence of barrier inhomogeneities at HJ. Double Gaussian distribution of barrier height with thermionic...read more
Citations
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Electrical transport properties of thermally stable n-ZnO/AlN/p-Si diode grown using RF sputtering
Chandra Prakash Gupta,Amit Kumar Singh,Praveen K. Jain,Shashi Kant Sharma,Shilpi Birla,S. Sancheti +5 more
TL;DR: In this paper, the temperature dependent electrical transport properties of n-ZnO/AlN/p-Si heterojunction diode fabricated by RF sputtering system have been investigated over a wide temperature range of 303-K-413-K.
Journal ArticleDOI
Vertically aligned ZnO nanorods of high crystalline and optical quality grown by dc reactive sputtering
TL;DR: In this paper, a combination of top-down and cross-sectional scanning electron microscopy studies have shown that the substrate temperature critically controls the growth behavior and morphology of ZnO films.
Journal ArticleDOI
High resolution X-ray diffraction studies of epitaxial ZnO nanorods grown by reactive sputtering
TL;DR: In this article, the micro-structural parameters of ZnO columnar films/nanorods were obtained from Williamson-Hall plots of ω and ω-2θ scans, and rocking curves of asymmetric reflections.
References
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Journal ArticleDOI
A comprehensive review of zno materials and devices
Ümit Özgür,Ya. I. Alivov,C. Liu,A. Teke,Michael A. Reshchikov,Seydi Doğan,Vitaliy Avrutin,Sang-Jun Cho,Hadis Morkoç +8 more
TL;DR: The semiconductor ZnO has gained substantial interest in the research community in part because of its large exciton binding energy (60meV) which could lead to lasing action based on exciton recombination even above room temperature.
Journal ArticleDOI
Barrier inhomogeneities at Schottky contacts
TL;DR: In this article, a new analytical potential fluctuations model for the interpretation of current/voltage and capacitance/voltages measurements on spatially inhomogeneous Schottky contacts is presented.
Journal ArticleDOI
Electron transport at metal-semiconductor interfaces : general theory
TL;DR: Results suggest that the formation mechanism of the Schottky barrier is locally nonuniform at common, polycrystalline, metal-semiconductor interfaces.
Journal ArticleDOI
Zinc oxide nanorod based photonic devices: recent progress in growth, light emitting diodes and lasers.
Magnus Willander,Omer Nur,Qing Xiang Zhao,Lili Yang,Michael Lorenz,Bingqiang Cao,J. Zuniga Perez,C. Czekalla,G. Zimmermann,Marius Grundmann,Andrey Bakin,Arne Behrends,M. Al-Suleiman,Abdelhamid El-Shaer,A. Che Mofor,B. Postels,Andreas Waag,Nikos Boukos,A. Travlos,Ho-Sang Kwack,J Guinard,D. Le Si Dang +21 more
TL;DR: Light emitting diodes based on n-ZnO nanorods combined with different technologies (hybrid technologies) are suggested and the recent electrical, as well as electro-optical, characteristics of these LEDs are shown and discussed.
Journal ArticleDOI
ZnO-Based Dye-Sensitized Solar Cells
TL;DR: In this article, a change of focus of the current research on ZnO-based DSCs (from morphology to surface control) is suggested and the origin of this striking difference in performance is analyzed and discussed with the perspective of future applications of ZnOs in dye-sensitized solar cells and related devices.
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