Research Of Photovoltaic Properties On Polymer/Graphene Oxide

ABSTRACT: Recently, the power conversion efficiency (PCE) of organic photovoltaic is very low; the research has concentrate on the composite of organic material and inorganic material. The graphene oxide has the highest carrier mobility and big specific surface area, has very good of interfacial face at the graphene oxide and polymer. The MEH-PPV and P3HT is mature for the rearch. The rearch content is the photovoltaic character of composite polymer and graphene oxide. This the main contents of my paper:1. We produced the graphene oxide by Hummers way and deoxidize the graphene oxide by isopropyl isocyanate. To token the graphene oxide by XRD,FTIR,SEM,TEM and Raman spectrum, to test the character of graphene oxide by Four-point probe. We has produced the graphene oxide, the conductivity of graphene oxide has very big improved.2. We produced the ITO/polymer-graphene oxide/Al devices by introduces graphene oxide into the polymers. We have rearched the open circuit voltage, short-circuit current and fill factor of different graphene oxide content. By the photoluminescence andâ… -â…¤, we have found that the graphene oxide has acted as the electron acceptor, avoid the coupling of electron and hole. And then, the quantum tunneling of graphene oxide has enhance the carrier mobility of composite films, augment the short-circuit current and PCE.3. We has produced the ITO/polymers-graphene oxide-MWCNTs/Al devices, and reached the effect of open circuit voltage, short-circuit current and fill factor for different graphene oxide content and MWCNTs content. We discover that the graphene oxide acted as the electron acceptor has improved the electron transported, the MWCNTs has improved the hole transported. For the same graphene oxide content, the PCE of P3HT is good compared with the PCE of MEH-PPV. For the biggest PCE, the PCE of P3HT has higher compared with PCE of MEH-PPV.4. We has produced the ITO/P3HT:PCBM-graphene oxide/Al devices. We has rearch the relation of short-circuit current and fill factor for the different graphene oxide content. The experiment has show that the graphene oxide has the effect of link PCBM, form the transported network of electron, enhance the carrier mobility of composite films.