Flexible diodes for radio frequency (RF) electronics: a materials perspective

J. Semple, D.G. Georgiadou, G. Wyatt-Moon, G.H. Gelinck, T.D. Anthopoulos

Research output: Contribution to journalReview articleAcademicpeer-review

22 Citations (Scopus)
380 Downloads (Pure)

Abstract

Over the last decade, there has been increasing interest in transferring the research advances in radiofrequency (RF) rectifiers, the quintessential element of the chip in the RF identification (RFID) tags, obtained on rigid substrates onto plastic (flexible) substrates. The growing demand for flexible RFID tags, wireless communications applications and wireless energy harvesting systems that can be produced at a low-cost is a key driver for this technology push. In this topical review, we summarise recent progress and status of flexible RF diodes and rectifying circuits, with specific focus on materials and device processing aspects. To this end, different families of materials (e.g. flexible silicon, metal oxides, organic and carbon nanomaterials), manufacturing processes (e.g. vacuum and solution processing) and device architectures (diodes and transistors) are compared. Although emphasis is placed on performance, functionality, mechanical flexibility and operating stability, the various bottlenecks associated with each technology are also addressed. Finally, we present our outlook on the commercialisation potential and on the positioning of each material class in the RF electronics landscape based on the findings summarised herein. It is beyond doubt that the field of flexible high and ultra-high frequency rectifiers and electronics as a whole will continue to be an active area of research over the coming years.

Original languageEnglish
Article number123002
Number of pages45
JournalSemiconductor Science and Technology
Volume32
Issue number12
DOIs
Publication statusPublished - 30 Oct 2017

Keywords

  • flexible electronics
  • printed electronics
  • radio frequency diodes
  • RFID

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