Open AccessPixel‐Structured Scintillator with Polymeric Microstructures for X‐Ray Image Sensors
Author(s) -
Jung Im Deok,
Cho Min Kook,
Bae Kong Myeong,
Lee Sang Min,
Jung Phill Gu,
Kim Ho Kyung,
Kim Sung Sik,
Ko Jong Soo
Publication year - 2008
Publication title -
etri journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.295
H-Index - 46
eISSN - 2233-7326
pISSN - 1225-6463
DOI - 10.4218/etrij.08.0208.0166
Subject(s) - scintillator , optical transfer function , materials science , optics , pixel , scintillation , substrate (aquarium) , sensitivity (control systems) , spatial frequency , x ray , modulation (music) , sample (material) , optoelectronics , electronic engineering , physics , acoustics , detector , engineering , oceanography , geology , thermodynamics
We introduce a pixel‐structured scintillator realized on a flexible polymeric substrate and demonstrate its feasibility as an X‐ray converter when it is coupled to photosensitive elements. The sample was prepared by filling Gd 2 O 2 S:Tb scintillation material into a square‐pore‐shape cavity array fabricated with polyethylene. For comparison, a sample with the conventional continuous geometry was also prepared. Although the pixelated geometry showed X‐ray sensitivity of about 58% compared with the conventional geometry, the resolving power was improved by about 70% above a spatial frequency of 3 mm −1 . The spatial frequency at 10% of the modulation‐transfer function was about 6 mm −1 .