Nanocarbon Based Polymer Solar Cells
Date Issued
2011
Date
2011
Author(s)
Tu, Kun-Hua
Abstract
Polymer solar cells have attracted a great interest for fabricating low-cost large-area mechanically flexible photovoltaic devices compared to the conventional inorganic counterparts. But the conventionally used ITO anode, PEDOT:PSS, and the low work function metal cathode all have its own shortcomings, hindering the devices from practical application. In this research, we would like to demonstrate new architectures of polymer solar cells based on allotropes of carbon nanomaterials, by utilizing p-type doped graphene or single walled carbon nanotube (SWNT) thin film as the anode, graphene oxide (GO) as the hole transport layer, n-type doping graphene as the cathode, and fullerene derivative PCBM/P3HT bulk heterojunctions as the photoactive layer. The photovoltaic device based on the solution processed SWNT/GO platform has exhibited good power conversion efficiency of 3.1% as compared to the conventional device (PCE=3.57%). And the new innovation of polymer solar cell based on all-graphene electrodes provides a potential route to develop a flexible, semitransparent photovoltaic device which can be fully integrated with the low-cost, roll-to-roll fabrication process. By overcoming the drawbacks of polymer solar cells, these two approaches have shown the potential of serving the long-term solutions for the future energy supply.
Subjects
graphene
graphene oxide
single walled carbon nanotube
transparent conducting electrode
polymer solar cell
solution process
roll-to-roll
SDGs
Type
thesis
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