Abstract
Carbon nanotube (CNT) diodes with different channel length between L = 0.6μm to 3.5 μm are fabricated on the same tube, and the electric and photovoltaic characteristics are investigated. It is found that although the open voltage of the diode increases rapidly for channel length L less than 1.0 μm, it saturates for longer channel devices. On the other hand, the short circuit current of the diode exhibites a clear peak at intermediate channel length of about 1.5 μm, a large leakage current via tunneling for short channel device and significantly decreased current for long channel device due to the increased recombination and channel resistance. The optimal channel length for a CNT diode in photovoltaic application is thus determined to be about 1.5 μm.
| Original language | English |
|---|---|
| Pages (from-to) | 1154-1157 |
| Number of pages | 4 |
| Journal | ACS Applied Materials and Interfaces |
| Volume | 4 |
| Issue number | 3 |
| DOIs | |
| State | Published - 28 Mar 2012 |
UN SDGs
This output contributes to the following UN Sustainable Development Goals (SDGs)
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SDG 7 Affordable and Clean Energy
Keywords
- carbon nanotube
- channel length
- diode
- doping-free
- photovoltaic
ASJC Scopus subject areas
- General Materials Science
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