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Miandal, Kellie
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article
The Structural and Optical Properties of Poly(Triarylamine) (PTAA) Thin Films Prepared at Different Spin Rate Using Spin Coating Method
Abstract
Poly(triarylamine) is one of the well-known organic materials and has several advantaged such as stable in ambient and require low-temperature annealing steps. A series of PTAA thin films were deposited at 1000 rpm to 3000 rpm on a glass substrate by spin coating. The structural and optical properties of the organic p-type semiconductor Poly(triarylamine) at the different spin rate were investigated. All the thin films exhibit approximately over 90% transmittance and the estimated band gap in the range of 3.01‐3.14 eV. The increasing of the spin rate results in the decreasing of the thickness and this relation obeys the power law relation of the form h ∝ ω−3/2, while the root mean square (RMS) of the films became more uniform as the spin rate increased.