2020
DOI: 10.1007/s41365-020-0737-5
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Spin coating of TPB film on acrylic substrate and measurement of its wavelength shifting efficiency

Abstract: Scintillation light from liquid noble gas in a neutrino or dark matter experiment lies typically within the vacuum ultraviolet (VUV) region and might be strongly absorbed by surrounding materials such as light guides or photomultipliers. Tetraphenyl butadiene (TPB) is a fluorescent material and acts as a wavelength shifter (WLS) which can turn the UV light to the visible light around a peak wavelength of 425 nm, enabling the light signals to be detected easily for physics study. Compared with a traditional TPB… Show more

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Cited by 12 publications
(11 citation statements)
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“…A demonstration of the spin-coating technique with toluene used as the solvent [88] resulted in approximately 200 nm-thick TPB coating (uniform, although with pinholes visible with SEM) showing 0.25 efficiency relative to evaporated TPB coating.…”
Section: Solvent Coatingmentioning
confidence: 99%
“…A demonstration of the spin-coating technique with toluene used as the solvent [88] resulted in approximately 200 nm-thick TPB coating (uniform, although with pinholes visible with SEM) showing 0.25 efficiency relative to evaporated TPB coating.…”
Section: Solvent Coatingmentioning
confidence: 99%
“…Since the LED box is place about 30cm away from the top flange of the test dewar, the temperature shows nearly no change during the whole test. A model LXD-66MQ linear optical photosensor [18,19] is placed on the side of the hole in the LED box to monitor the change of LED light intensity. The signal of optical photosensor is converted by the I-V conversion amplifier and recorded by the oscilloscope.…”
Section: Test Methods and Experimental Setupmentioning
confidence: 99%
“…A demonstration of the spin-coating technique with toluene used as the solvent [86], resulted in approximately 200 nm thick TPB coating (uniform, although with pinholes visible with SEM) showing 0.25 efficiency relative to evaporated TPB coating.…”
Section: Solvent Coatingmentioning
confidence: 99%