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首页> 外文期刊>ACS applied materials & interfaces >Synthesis of Phenanthro[1,10,9,8-cdefg]carbazole-Based Conjugated Polymers for Green-Selective Organic Photodiodes
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Synthesis of Phenanthro[1,10,9,8-cdefg]carbazole-Based Conjugated Polymers for Green-Selective Organic Photodiodes

机译：用于绿色选择性有机光电二极管的苯并[1,10,9,8-cdefg]咔唑基共轭聚合物的合成

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摘要

A push pull-type donor copolymer, named PP-TPD, was synthesized with the Suzuki coupling reaction using 6H-phenanthro[1,10,9,8-cdefg]carbazole (PCZ) as the donor unit and 1,3-bis (5-bromo thiophen-2-y1)-5-octyl-4H-thieno[3,4-c]pyrrole-4,6(5H)-dione (TPD) as the acceptor unit. The synthesized PP-TPD was systematically investigated in terms of crystallinity and thermal, electrical, electrochemical, and optical properties. PP-TPD revealed green-selective absorption with a narrow full width at half-maximum of 138 nm. Green-selective organic photodiodes (OPDs) were constructed using PP-TPD as the green-absorbing donor and ZnO as the nonabsorbing acceptor material. The fabricated OPDs exhibited an extremely low dark current of 0.68 nA/cm(2) at -5 V and a high detectivity above 10(12) Jones at 550 nm. Moreover, they showed a sufficiently high 3-dB frequency and a linear dynamic range, similar to those of ideal-operating OPDs. The origin and physics background of the observed low dark current and high detectivity are discussed in detail.
机译：推挽式供体共聚物PP-TPD是通过Suzuki偶联反应合成的，使用6H-菲并[1,10,9,8-cdefg]咔唑（PCZ）作为供体单元和1,3-bis（以5-溴噻吩-2-y1）-5-辛基-4H-噻吩并[3,4-c]吡咯-4,6（5H）-二酮（TPD）为受体单元。从结晶度和热，电，电化学和光学性能方面对合成的PP-TPD进行了系统的研究。 PP-TPD显示绿色选择性吸收，在138 nm的一半最大值处具有窄的全宽度。使用PP-TPD作为绿色吸收供体，使用ZnO作为非吸收受体材料，构建绿色选择性有机光电二极管（OPD）。制成的OPD在-5 V时表现出0.68 nA / cm（2）的极低暗电流，在550 nm时在10（12）Jones之上具有高检测率。此外，它们显示出足够高的3 dB频率和线性动态范围，与理想操作的OPD相似。详细讨论了观测到的低暗电流和高探测性的起源和物理背景。

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