Methylammonium Lead Iodide for Efficient X-ray Energy Conversion

详细信息    查看全文

• 作者：B谩lint N谩fr谩di ; G谩bor N谩fr谩di ; L谩szl贸 Forr贸 ; Endre Horv谩th
• 刊名：Journal of Physical Chemistry C
• 出版年：2015
• 出版时间：November 12, 2015
• 年：2015
• 卷：119
• 期：45
• 页码：25204-25208
• 全文大小：302K
• ISSN：1932-7455

文摘

We report on photocurrent generation by X-ray irradiation in methylammonium lead iodide CH₃NH₃PbI₃ single crystals. We observed 75% of charge collection efficiency in millimeter sized samples. This efficiency is partially due to the high photon absorption coefficient and X-ray beam stopping power of our lead containing material. The material shows a less than 20% decrease in its performance up to 40 Sv of total X-ray dose, which represents a very good stability. Moreover, our Monte Carlo N-Particle Transport calculations indicate that energetic particle radiation can also be harvested by CH₃NH₃PbI₃. These properties are compared to CH₃NH₃SnI₃ and PbI₂. The possible application of these advantageous properties could be in simultaneous radiation protection and direct electricity production in environments with highly energetic background radiation.