Photovoltaic and optoelectronic applications of large-area graphene-based electronics

Summary form only given. In this talk, we would like to present the applications of graphene-based materials on large-area photovoltaic and optoelectronic devices. Chemically derived graphene-oxide (GO) from solution processes or epitaxial graphene obtained from chemical vapor deposition (CVD) have been demonstrated to replace the ITO electrode. GO could be also a simple solution processable alternative to PEDOT:PSS as the effective hole transport and electron blocking layer in polymer photovoltaics, suggesting that future polymer solar-cell devices could be "all-carbon". In addition, photoluminescence of GO and reduced-GO will be demonstrated. The tunablity of PL emission from red to blue colors offers a potential to use graphene-based materials on solution-processable optoelectronic devices for full-color display and lighting applications.