Space charge limited conduction with exponential trap distribution in reduced graphene oxide sheets
By Daeha Joung, A. Chunder, L. Zhai, S. Khondaker. 2010
158 citations recorded by the source corpus.
We elucidate on the low mobility and charge traps of the chemically reduced graphene oxide (RGO) sheets by measuring and analyzing temperature dependent current-voltage characteristics. The RGO sheets were assembled between source and drain electrodes via dielectrophoresis. At low bias voltage the conduction is Ohmic while at high bias voltage and low temperatures the conduction becomes space charge limited with an exponential distribution of traps. We estimate an average trap density of 1.75×1016 cm−3. Quantitative information about charge traps will help develop optimization strategies of passivating defects in order to fabricate high quality solution processed graphene devices.
Subfields: Electrical and Electronic Engineering, Materials Chemistry
View Paper: https://www.semanticscholar.org/paper/90a798cc361fc493f5e98dcec6f0c2a39b723bdb
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In Electrical and Electronic Engineering
In Materials Chemistry
Citations in the corpus
- Large Area Single Crystal (0001) Oriented MoS2 Thin Films (2013, background): “lower current density, and I α V2 at higher current density. The transition of the voltage dependence of current from linear to quadratic is a characteristic feature of space charge limited transport [26], suggesting that the MoS 2 has relatively low background carrier density, a desirable property ”