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Defects make better semiconductors
Nature Electronics ( IF 33.7 ) Pub Date : 2024-11-14 , DOI: 10.1038/s41928-024-01299-6
Matthew Parker

The researchers — who are based at the University of Illinois Urbana-Champaign — show that in certain compound semiconductors the defects self-organize into electrically neutral complexes. These push deep-level traps closer to the conduction band edge, where they act as donors. So rather than degrade performance, the CuIn5Se8 field-effect transistors with introduced defects show better performance than their less defective parent material, CuInSe2.

The transistors show an average mobility of 58 cm2 V–1 s–1, on-state current density of 35 μA μm–1 and subthreshold swing of 189 mV dec–1. They were used to make complementary logic circuits and ring oscillators (with solution-processed carbon nanotubes used to make the p-type transistors), and a driving circuit in a 508 pixels per inch micro-light-emitting diode.



中文翻译:


缺陷造就更好的半导体



伊利诺伊大学厄巴纳-香槟分校的研究人员表明,在某些化合物半导体中,缺陷会自组织成电中性复合物。这些陷阱将深层陷阱推向更靠近导带边缘的位置,在那里它们充当供体。因此,引入缺陷的 CuIn5Se8 场效应晶体管与其缺陷较少的母材料 CuInSe2 相比,性能并没有降低。


晶体管的平均迁移率为 58 cm2 V–1 s–1,导通电流密度为 35 μA μm–1,亚阈值摆幅为 189 mV dec–1。它们用于制造互补逻辑电路和环形振荡器(使用溶液处理的碳纳米管制造 p 型晶体管),以及每英寸 508 像素微型发光二极管中的驱动电路。

更新日期:2024-11-14
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