The Performance of Pristine Graphene - Research Report Assignment Help

Assignment Task:

1. Summary
Describe the proposed research in simple terms in a way that could be publicised to a general audience 
The project includes working on the fabrication of graphene-based Si substrates. In this project, the effect of different dopants will be investigated to optimize the type of dopant along with time treatments. This will improve the performance of pristine graphene/Si solar cells.  
The PMMA residue is the main issue of the wet transfer process because it has a negative effect on the graphene properties such as the shifting of the Dirac point, increased sheet and contact resistance and reduction of the mean free path. Moreover, it alerts the electronic band structure of graphene when its adsorbed at the edge or defect sites. It has also been stated that the hysteresis in (Id-Vg) Characteristics of gFETs is originated as a result of trapping charges at graphene/SiO2 interfaces.
The density and occupancy properties of these charge generally depend on the composition and fabrication process of the dielectric materials. In fact, PMMA residue is also one of the major issues that effects CVD-graphene surface. This indicates that the density of trapped charges at the graphene/SiO2 interface will be increased, leading to a further increase in the hysteresis in (Id-Vg) characteristics of this kind of device. Hence minimizing the residue PMMA on a graphene surface may reduce the hysteresis in (Id-Vg) curves. Removing the residue of PMMA is a challenge issue to obtain a graphene sheet with its intrinsic electronic properties.    

2. Objectives
List the main objectives of the proposed research in order of priority (maximum ½ side of A4) working on a fabrication of graphene based Si substrates.
The effect of different dopants will be investigated to optimum the type of dopant along with time treatments.
Improving the performance of pristine graphene/Si solar cells.

3. Beneficiaries
Describe who will benefit from the research and the relevance to beneficiaries
The benefit will be for solar cell companies since this project will simplify the fabrication of commercial silicon solar cells.

4. Proposed Research and its Context
Describe the proposed research in technical terms and include a minimum of 4 references at the end of this section (maximum 1 & 1/3 sides of A4)
 

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