期刊
JOURNAL OF INORGANIC AND ORGANOMETALLIC POLYMERS AND MATERIALS
卷 30, 期 11, 页码 4552-4568出版社
SPRINGER
DOI: 10.1007/s10904-020-01663-x
关键词
In(2)O(3)thin films; Spray pyrolysis; p-Si; n-In(2)O(3)junction diode; Ideality factor
资金
- Department of Science and Technology-Science and Engineering Research Board, Government of India [EMR/2016/007874]
Octahedral indium oxide thin films with different precursor concentrations of 0.05, 0.075, 0.1 and 0.125 M were coated on glass substrates at 450 degrees C using jet nebulizer spray pyrolysis technique. Surface morphology of the prepared samples showed closely packed octahedrons for all concentrations. The measured root-mean-square value of the films was varied between 40.45 and 188.98 nm with increased precursor concentrations. From optical analysis, the calculated optical band gap was continuously decreased with increase in precursor concentrations. A slight blue shift was recorded through the PL spectrum while increasing the precursor concentration due to the oxygen vacancies. The nature of electrical conductivity of the In(2)O(3)films was analysed. Interestingly, we have calculated two types of activation energies in the In(2)O(3)films one is corresponding to low temperature and another is higher temperature. Further, p-Si/n-In(2)O(3)junction diodes are fabricated with different precursor concentrations. Particularly, the 0.075 M of p-Si/n-In(2)O(3)junction diode recorded a minimum ideality factor of n = 2.64 under light exposed condition, confirming the photo-conducting nature of the diodes in visible wavelength range.
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