Pure Formamidinium-Based Perovskite Light-Emitting Diodes with High Efficiency and Low Driving Voltage

详细信息    查看全文

• 作者：Lei Meng ; En-Ping Yao ; Ziruo Hong ; Huajun Chen ; Pengyu Sun ; Zhanlue Yang ; Gang Li and Yang Yang
• 刊名：Advanced Materials
• 出版年：2017
• 出版时间：January 25, 2017
• 年：2017
• 卷：29
• 期：4
• 全文大小：1484K
• ISSN：1521-4095

文摘

A formamidinium(FA)-based perovskite showns superior optoelectronic properties including better stability than methylammonium-based counterparts. Pure FA-perovskite-based light-emitting diodes (LEDs) with high efficiency are reported. Interestingly, the LED clearly shows a sub-bandgap emission at 1.7 V (bandgap 2.3 eV). This important discovery provides further insights of the charge transport mechanism in perovskite-based optoelectronic devices.