Negative Differential Resistance Transistor with Organic p-n Heterojunction

Kazuyoshi Kobashi, Ryoma Hayakawa, Toyohiro Chikyow, Yutaka Wakayama

研究成果: Article査読

39 被引用数 (Scopus)


Negative differential resistance (NDR) has large potential for versatile device applications, including high-frequency oscillators, memories, fast switches, and multilevel logic circuits. NDRs are observed at heteromaterial interfaces in resonant tunneling diodes or Esaki diodes consisting of compound semiconductors or two-dimensional (2D) atomic thin films. However, these devices suffer from poor peak-to-valley ratios (PVR) at room temperature; a cryogenic temperature is needed to improve the PVR. These negative factors are obstacles to practical applications. Here, a new NDR transistor is proposed, in which a p-n heterojunction of organic semiconductors plays a key role. Well-balanced carrier transport is manipulated at the organic p-n junction to realize outstanding NDR. Experimental and simulation analyses reveal that the observed NDR can be explained by analogy with the shoot-through current mechanism in complementary metal-oxide- semiconductor (CMOS) devices. As a result, the NDR transistor shows large PVRs of up to about 104 even at room temperature.

ジャーナルAdvanced Electronic Materials
出版ステータスPublished - 2017 8月

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料


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