YANG Yong-yuan, GAO Zhi-min, FENG Shu-jing, WU Shi-kang. A POSITIVE DEEP UV PHOTORESIST——Ⅰ. A Study of Poly (Styrene-Sulfone)[J]. Acta Polymerica Sinica, 1984,(6):408-413.
YANG Yong-yuan, GAO Zhi-min, FENG Shu-jing, WU Shi-kang. A POSITIVE DEEP UV PHOTORESIST——Ⅰ. A Study of Poly (Styrene-Sulfone)[J]. Acta Polymerica Sinica, 1984,(6):408-413.DOI:
Poly(styrene-sulfone) has been sythesized and evaluated as a positive deep UV resist for high resolution lithography. The resolution is 0.75 μm. The sensitivity is approximately 6.5 fold higher than PMMA. In this work we have found that the sensitivity depends greatly on the molecular weight and film thickness. The bigger the molecular weight
the higher the sensitivity. The thiner the thickness
the higher the sensitivity. Hydroperoxide and earbonyl group were observed during irradiation by the measurement of IR and VU spectroscopy.