Optical Analysis of Ag-NPs Containing Methyl Ammonium Lead Tri-Iodide Thin Films

Traektoriâ Nauki, Vol. 3, No. 9, pp. 2007-2015, 2017, DOI: 10.22178/pos.26-10

9 Pages Posted: 9 Oct 2017

See all articles by Cliff Mosiori

Cliff Mosiori

Technical University of Mombasa

Walter Njoroge

Kenyatta University

Lawrence Ochoo

Kenyatta University

Multiple version iconThere are 2 versions of this paper

Date Written: September 30, 2017

Abstract

Methyl ammonium lead tri-iodide hybrid thin films were grown using solution technique. They were doped with silver nano-particles at different concentrations at concentrations of 0.05, 0.06, 0.07, 0.08, and 0.09 mM. Their reflectance and transmittance were recorded in the wavelength range 300–900 using UV-Vis double - beam spectrophotometer. Using these measurements, other optical parameters were simulated using scout software. The effect of silver nanoparticles was investigated. Results revealed that the thin films had highest transmittance of about 79 % as their band gap varied from 1.921–1.832 eV. Electrical conductivity varied from 1.4–1.6×105 S cm–1 while optical conductivity varied in the range of 0.3–0.6×1010 sec-1. They had a significantly low refractive index, suitable for optical applications within the range of 1.6–1.8. The extinction coefficient varied in the range as 1.0–1.7×10-5 while the absorption coefficient varied varies in the range of 2.1-4.2 cm- 1. It was concluded that the thin films were suitable for photonic device applications.

Keywords: optical parameters; silver nano-particles; methyl ammonium lead tri-iodide; CH3NH3PbI3; energy band gap

Suggested Citation

Mosiori, Cliff and Njoroge, Walter and Ochoo, Lawrence, Optical Analysis of Ag-NPs Containing Methyl Ammonium Lead Tri-Iodide Thin Films (September 30, 2017). Traektoriâ Nauki, Vol. 3, No. 9, pp. 2007-2015, 2017, DOI: 10.22178/pos.26-10, Available at SSRN: https://ssrn.com/abstract=3049341

Cliff Mosiori (Contact Author)

Technical University of Mombasa ( email )

Tom Mboya Street
P. O. Box 90420-80100
Mombasa, 90420
Kenya

Walter Njoroge

Kenyatta University

P.O. Box 43844
Nairobi, Nairobi 00100
Kenya

Lawrence Ochoo

Kenyatta University ( email )

P.O. Box 43844
Nairobi, Nairobi 00100
Kenya

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