The electrical response of PbI2 films to γ-ray irradiation and the limitation of film thickness

✍ Scribed by Yuri Dmitriev; Paul R. Bennett; Leonard J. Cirignano; Mikhail Klugerman; Kanai S. Shah

• Publisher: Elsevier Science
• Year: 2009
• Tongue: English
• Weight: 173 KB
• Volume: 599
• Category: Article
• ISSN: 0168-9002
• DOI: 10.1016/j.nima.2008.09.016

✦ Synopsis

It was shown that g-ray induced photocurrent in PbI 2 films is determined by the competition of two processes: electron-hole pair generation due to X-ray photon absorption and their recombination on surface defects. As a result of these processes, PbI 2 films of (9474) mm in thickness have maximal charge collection properties. Electron-hole pair creation energy was estimated using the I-t and I-V characteristics of the films. The values obtained with these methods, (8.870.5) and (3.471.4) eV, respectively, are close to the theoretical prediction.