Functionalized reduced graphene oxide with tunable band gap and good solubility in organic solvents
Artikel i vetenskaplig tidskrift, 2019

The materials intended for organic photovoltaics and organic electronics require specific properties, such as conjugation along backbones, good solubility in organic solvents and a suitable band gap. Graphene oxide holds a high indirect optical band gap of 3 eV and a hydrophilic behavior. However, based on the fact that the graphene oxide band gap is related to the C/O ratio, chemical reduction and functionalization must be performed to obtain the proper characteristics that are required for organic applications. Here an efficient approach for chemically modified graphene oxide as a low-cost alternative for organic semiconductor materials was developed. The two synthesized materials (functionalized reduced graphene oxide and functionalized reduced graphene oxide decorated with silver nanoparticles) exhibited a 65% and 52% band gap decrease respectively, compared to graphene oxide. Moreover, both materials were soluble in organic solvents at high concentrations [10 mg mL −1 ], turning them suitable for many applications, including organic electronics, with the additional advantage of being a solution process avoiding restacking of layers.

Författare

Ulises A. Méndez-Romero

Centro de Investigacion en Materiales Avanzados

Sergio Alfonso Garcia Perez

Centro de Investigacion en Materiales Avanzados

Xiaofeng Xu

Chalmers, Kemi och kemiteknik, Tillämpad kemi, Polymerteknologi

Ergang Wang

Chalmers, Kemi och kemiteknik, Tillämpad kemi, Ergang Wang Group

L. Licea-Jiménez

Centro de Investigacion en Materiales Avanzados

Carbon

0008-6223 (ISSN)

Vol. 146 491-502

Ämneskategorier

Materialkemi

Annan kemi

Den kondenserade materiens fysik

DOI

10.1016/j.carbon.2019.02.023

Mer information

Senast uppdaterat

2020-02-12