Magnetic, structural and optical behavior of cupric oxide layers for solar cells
- Authors
- Vikraman, Dhanasekaran; Park, Hui Joon; Kim, Seong-Il; Thaiyan, Mahalingam
- Issue Date
- Nov-2016
- Publisher
- ELSEVIER SCIENCE SA
- Keywords
- Nanomagnetism; Chemical synthesis; Nanosheets; Surface properties
- Citation
- JOURNAL OF ALLOYS AND COMPOUNDS, v.686, pp.616 - 627
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF ALLOYS AND COMPOUNDS
- Volume
- 686
- Start Page
- 616
- End Page
- 627
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/21396
- DOI
- 10.1016/j.jallcom.2016.06.032
- ISSN
- 0925-8388
- Abstract
- Room temperature ferromagnetic hysteresis is observed in CuO nano films synthesized through chemical strategy. The room temperature ferromagnetic behavior in CuO is quite a new observation without any doping, annealing or any other post preparation treatments. The observed magnetization value is 0.24 T which is obviously depicted that the nano-scale magnetic properties dependent on the shape and size of nano films. The morphological observations is depicted that the uneven ellipsoidal grains transformed to nano-sheet shaped grains. Atomic force microscopy (AFM) images are also strengthening the observation of shape variations due to bath temperature variation. The surface profile and grain contour images are verified the size and shape variations. Structural variations are precisely predicted by X-ray diffraction patterns and crystallinity of the films is discussed. The growth mechanism of nano sheet formation and physical phenomena are discussed. The luminescence properties variations are observed by photoluminescence (PL) spectroscopy and it has exposed that the bath temperature effects on the CuO films. Xray photoelectron spectroscopy (XPS) spectra is depicted that Cu 2p(3/2), Cu 2p(1/2) and O-1s related peaks at 929.50, 952.80 and 529.38 eV binding energy, respectively. In addition, the optical dielectric dispersion parameters such as effective mass (m(e)), optical susceptibility (chi(e)), carrier concentration (N), plasma frequency (omega(p)), relaxation time (tau) and frequency (f) are also evaluated. Raman scattering spectra revealed the A(g) and B-g modes shift at 296 and 628 cm(-1).
- Files in This Item
-
Go to Link
- Appears in
Collections - 서울 공과대학 > 서울 유기나노공학과 > 1. Journal Articles
![qrcode](https://api.qrserver.com/v1/create-qr-code/?size=55x55&data=https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/21396)
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.