结合聚合物异质原子工程使高检测能力的对称两极光电晶体管成为可能
Davide Nodari1, Sandeep Sharma2, Weitao Jia1
1Department of Chemistry & Centre for Processable Electronics, Imperial College London, London, W12 0BZ, UK.
Advanced materials (Deerfield Beach, Fla.)
|April 29, 2024
概括
研究人员使用一种新型聚合物设计了有机光电晶体 (OPT),提高了低成本电子产品的电荷传输. 这一突破提高了近红外 (NIR) 检测和光逆变器的双极性能.
科学领域:
- 有机电子学有机电子学
- 材料科学是一种材料科学.
- 半导体物理 半导体物理
背景情况:
- 溶液加工有机光电晶体管 (OPT) 对于开发低成本的集成电路至关重要.
- 在OPT中实现平衡的收费运输和高性能仍然是一个关键的挑战.
- 异原子工程为调整聚合物特性提供了一条途径,以改善设备特性.
研究的目的:
- 展示一种异原子工程方法,用于修改低带间隙二基多罗 (DPP) 联合聚合物.
- 为了增强电子亲和力,电荷传输平衡,晶体性和有机半导体的方向.
- 研究工程材料在高性能双极OPT中用于NIR检测和光逆变器的应用.
主要方法:
- 合成了一种新的DPP共聚合物 (PDPP-BO) 通过在甲 (BT) 共同分子中用氧取代硫,形成氧 (BO).
- 使用PDPP-BO材料制造的有机薄膜晶体管 (OTFT).
- 描述了制造设备的电子和光电子特性,包括电荷载体的移动性,光响应性和检测性.
主要成果:
- 在DPP共聚物中用氧代替硫,显著增加了电子亲和力和两极性.
- 基于PDPP-BO的OTFT显示了电子的高电荷载体运动率为0.6cm2Vs-1和孔的0.3cm2Vs-1.
- 两极式OPT显示出出色的NIR检测能力,具有高光响应性 (69-99 A/W) 和特定检测性 (高达4×109 Jones),以及高开/关比 (9×104).
- 这些设备作为双极光逆变器,在照明下增强了46%的增强效率.
结论:
- 通过将氧气纳入DPP共聚合物中,异原子工程是一种有效的策略,可以在有机电子中实现平衡的电荷传输和高性能.
- 新型PDPP-BO材料使高性能双极有机光电晶体管适用于敏感的NIR检测和先进的应用,如光逆变器.
- 这些发现为开发低成本,溶液处理的双极有机电子电路铺平了道路.
相关概念视频
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