Morphology transformation from ZnO nanorod arrays to ZnO dense film induced by KCl in aqueous solution
Creators
- 1. State Key Laboratory of High Performance Ceramics and Superfine Microstructures, Shanghai Institute of Ceramics, Chinese Academy of Sciences, No.1295, Dingxi Road Shanghai, 200050 (China) and RCDAMP, Pusan National University, Busan 609-735 (Korea, Republic of)
- 2. State Key Laboratory of High Performance Ceramics and Superfine Microstructures, Shanghai Institute of Ceramics, Chinese Academy of Sciences, No.1295, Dingxi Road Shanghai, 200050 (China)
- 3. Department of Nano Materials and BK 21 Nano Fusion Technology Division, Pusan National University, Miryang 627-706 (Korea, Republic of)
Description
The effect of KCl on the morphology, composition, optical and electrical properties of ZnO nanostructures obtained from aqueous solution method was investigated. Field emission scanning electron microscopy reveals that by increasing the content of KCl in the precursor solution, the morphology of the samples changes from one-dimensional ZnO nanorod arrays to two-dimensional dense films. This is accompanied by a decrease of the growth rate and an improvement of the crystal quality. After annealing at 550 deg. C, the optical band gap energy changed from 3.5 to 3.2 eV due to the decrease of Cl impurity, and the defect species had changed from vacancies of oxygen into interstitial oxygen ions. A possible mechanism for the morphology transformation is discussed
Availability note (English)
Available from http://dx.doi.org/10.1016/j.tsf.2008.07.006Additional details
Identifiers
- DOI
- 10.1016/j.tsf.2008.07.006;
- PII
- S0040-6090(08)00739-6;
Publishing Information
- Journal Title
- Thin Solid Films
- Journal Volume
- 517
- Journal Issue
- 2
- Journal Page Range
- p. 626-630
- ISSN
- 0040-6090
- CODEN
- THSFAP
INIS
- Country of Publication
- Netherlands
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 40061637
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- ANNEALING; AQUEOUS SOLUTIONS; CRYSTALS; ELECTRICAL PROPERTIES; EV RANGE 01-10; FILMS; INTERSTITIALS; MORPHOLOGY; NANOSTRUCTURES; OXYGEN IONS; POTASSIUM CHLORIDES; SCANNING ELECTRON MICROSCOPY; TEMPERATURE RANGE 0400-1000 K; VACANCIES; ZINC OXIDES
- Descriptors DEC
- ALKALI METAL COMPOUNDS; CHALCOGENIDES; CHARGED PARTICLES; CHLORIDES; CHLORINE COMPOUNDS; CRYSTAL DEFECTS; CRYSTAL STRUCTURE; DISPERSIONS; ELECTRON MICROSCOPY; ENERGY RANGE; EV RANGE; HALIDES; HALOGEN COMPOUNDS; HEAT TREATMENTS; HOMOGENEOUS MIXTURES; IONS; MICROSCOPY; MIXTURES; OXIDES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; POINT DEFECTS; POTASSIUM COMPOUNDS; SOLUTIONS; TEMPERATURE RANGE; ZINC COMPOUNDS
Optional Information
- Copyright
- Copyright (c) 2008 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.