Facile growth of aluminum oxide thin film by chemical liquid deposition and its application in devices

Author:

Li Dianlun1,Ruan Lu1,Sun Jie1,Wu Chaoxing1,Yan Ziwen1,Lin Jintang1,Yan Qun1

Affiliation:

1. Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China, and Optoelectronics Department, College of Physics and Information Engineering, Fuzhou University , Fuzhou , 350100 , China

Abstract

Abstract Uniform and continuous Al2O3 thin films were prepared by the chemical liquid deposition (CLD) method. The breakdown field strength of the amorphous CLD-Al2O3 film is 1.74 MV/cm, making it could be used as a candidate dielectric film for electronic devices. It was further proposed to use the CLD-Al2O3 film as an electron blocking layer in a triboelectric nanogenerator (TENG) for output performances enhancement. Output voltages and currents of about 200 V and 9 µA were obtained, respectively, which were 2.6 times and 3 times, respectively, higher than TENG device without an Al2O3. A colloidal condensation-based procedure controlled by adjusting the pH value of the solution was proposed to be the mechanism of CLD, which was confirmed by the Tyndall effect observed in the growth liquid. The results indicated that the CLD could serve as a low-cost, room temperature, nontoxic and facile new method for the growth of functional thin films for semiconductor device applications.

Publisher

Walter de Gruyter GmbH

Subject

Surfaces, Coatings and Films,Process Chemistry and Technology,Energy Engineering and Power Technology,Biomaterials,Medicine (miscellaneous),Biotechnology

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