Thermally stimulated infrared spectroscopy and its application to molecular structure analysis of carrier traps in organic semiconductor thin films

热受激红外光谱及其在有机半导体薄膜载流子陷阱分子结构分析中的应用

• 批准号: 24655177
• 负责人: FURUKAWA Yukio
• 金额: $ 2.66万
• 依托单位: Waseda University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Challenging Exploratory Research
• 财政年份: 2012
• 资助国家: 日本
• 起止时间: 2012-04-01 至 2014-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-24655177/
• 关键词: 赤外分光; 有機半導体; トラップ; P3HT; PCBM; 有機薄膜太陽電池; 光化学; キャリアトラップ

We have studied infrared spectral changes of PEDOT:PSS/P3HT:PCBM films, which are active materials of organic thin film solar cells, upon irradiation of 532 nm light. Spectral changes were observed upon 60 min irradiation. The observed spectra are likely attributed to the overlaps of the bands due to trapped positive polarons in P3HT and chemical species generated by light irradiation. They are stable at room temperature. Large spectral changes were observed with increasing temperature, which are attributed to the changes of spectrum of PEDOT:PSS. Thus, it is difficult to obtain the activation energy of the trapped polarons. We will obtain the activation energy by measuring the rate of the reactions at several temperatures.

研究了有机薄膜太阳能电池活性材料PEDOT：PSS/P3 HT：PCBM薄膜在532 nm光照射下的红外光谱变化。 在60分钟照射后观察到光谱变化。 观察到的光谱可能是由于在P3 HT和光照射产生的化学物种的捕获的正极化子的频带的重叠。 它们在室温下是稳定的。 随着温度的升高，PEDOT：PSS的光谱发生了很大的变化。 因此，很难获得被捕获的极化子的激活能。 我们将通过测量几个温度下的反应速率来获得活化能。