Applied Physics Letters· 2016Q1
Single crystal CVD diamond membranes for betavoltaic cells
- 61citations
- Q1SCImago
- 2016year
Short summary
Researchers developed a single crystal diamond membrane for betavoltaic cells, achieving a 9.4% conversion efficiency, among the highest reported for such devices.
AI-generated from the title and abstract; the full text is not read.
Key points
- Developed a single crystal diamond membrane in a PIM structure for betavoltaic cells.
- Achieved 1.85 V open-circuit voltage and 9.4% conversion efficiency under electron beam testing.
- Demonstrated 98% charge collection efficiency and 80% fill factor.
- The device reached a maximum power output of 10.48 μW.
AI-generated from the title and abstract; the full text is not read.
Abstract
A single crystal diamond large area thin membrane was assembled as a p-doped/Intrinsic/Metal (PIM) structure and used in a betavoltaic configuration. When tested with a 20 keV electron beam from a high resolution scanning electron microscope, we measured an open circuit voltage (Voc) of 1.85 V, a charge collection efficiency (CCE) of 98%, a fill-factor of 80%, and a total conversion efficiency of 9.4%. These parameters are inherently linked to the diamond membrane PIM structure that allows full device depletion even at 0 V and are among the highest reported up to now for any other material tested for betavoltaic devices. It enables to drive a high short-circuit current Isc up to 7.12 μA, to reach a maximum power Pmax of 10.48 μW, a remarkable value demonstrating the high-benefit of diamond for the realization of long-life radioisotope based micro-batteries.
The authors' abstract, as published at the source. Applied Physics Letters, 2016 · DOI ↗
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Field: Nuclear Energy and Engineering
Nuclear Energy and EngineeringEnergy