Scintillation light from a liquid noble gas during a neutrino or dark matter experiment lies typically within the vacuum ultraviolet region and might be strongly absorbed by surrounding materials such as light guides or photomultipliers. Tetraphenyl butadiene (TPB) is a fluo-rescent material, acts as a wavelength shifter, and can tu UV light into visible light at a peak wavelength of approximately 425 nm, enabling the light signals to be easily detected during physics studies. Compared with a traditional TPB coating method using vapor deposition, we propose an alteative technique applying a spin-coating procedure to facilitate the development of neutrino and dark matter detectors. This article introduces a method to fabricate a TPB film on an acrylic substrate by using a spin-coating method, reports the measurements of the sample film thickness and roughness, demonstrates the reemission spectrum, and quantifies the wavelength shifting efficiency.