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High-performance alpha-voltaic cell based on a 4H-SiC PIN junction diode

  • Runlong Gao
  • , Linyue Liu
  • , Yang Li
  • , Lvkang Shen
  • , Pengying Wan
  • , Xiao Ouyang
  • , Haozhe Zhang
  • , Jinlu Ruan
  • , Leidang Zhou
  • , Liang Chen
  • , Xianpeng Zhang
  • , Jinliang Liu
  • , Hui Li
  • , Ming Liu
  • , Xiaoping Ouyang

Research output: Contribution to journalArticlepeer-review

16 Scopus citations

Abstract

Alpha-voltaic cells have great potential in military, biomedical, and infrastructure applications due to their characteristics of long operating life, small volume, and superior adaptability. However, improvements in power conversion efficiency (PCE), and the balance between power density and stability have been a challenge owing to the ‘poor-matching’ between energy conversion transducers and alpha-emitting isotope sources, as well as the radiation damage to semiconductor devices. In this study, we report the electrical properties of a high-performance alpha-voltaic cell based on a 4H-SiC PIN junction diode energy conversion transducer (active area of 1 cm2) that has been experimentally validated by a He ions electrostatic accelerator. Remarkably, the alpha-voltaic cell displayed an excellent PCE of 0.88%, exhibiting a nearly 7-fold enhancement compared to alpha-voltaic cells of previous studies, with a strikingly high open-circuit voltage of 1.99 V, a short-circuit current of 13.64 nA/cm2, and a maximum output power density of 16.78 nW/cm2.

Original languageEnglish
Article number115090
JournalEnergy Conversion and Management
Volume252
DOIs
StatePublished - 15 Jan 2022

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

  1. SDG 7 - Affordable and Clean Energy
    SDG 7 Affordable and Clean Energy

Keywords

  • 4H-SiC PIN junction diode
  • Alpha-voltaic cell
  • High power conversion efficiency

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