Study on organic semiconductor detector for practical application of large low-mass pixel detector

2016 Fiscal Year Final Research Report

• Project/Area Number: 26610075
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Particle/Nuclear/Cosmic ray/Astro physics
• Research Institution: High Energy Accelerator Research Organization
• Principal Investigator: Saito Masatoshi 大学共同利用機関法人高エネルギー加速器研究機構, 加速器科学支援センター, シニアフェロー (30391783)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: 有機半導体 / 放射線検出器

Outline of Final Research Achievements

We aimed at large-area, bendable radiation detectors and worked on the development of a new structure detector applying organic TFT manufacturing technology. We conducted a quantum beam irradiation test to confirm the performance of the prototype element as a radiation detector. Initially, the S / N ratio was not good, and we could not distinguish between signal and noise. We have reduced the element size so that it can be installed close to the preamplifier, and also improved the preamplifier board. Although the signal of the heavy particle ion could be detected, the charge collection efficiency was still insufficient and it was not possible to observe the signal by α ray. In order to compare the charge collection efficiency of the device, we tried using blue LED light which can obtain a large detector signal. Signals were observed, and experimental conditions such as applied voltage to the device could be optimized.

Free Research Field

放射線計測回路