Graphene quantum dots as a green photosensitizer with carbon-doped ZnO nanorods for quantum-dot-sensitized solar cell applications

[摘要] Graphene quantum dots (GQDs), N-doped GQDs (NGQDs) and S, N co-doped GQDs (SNGQDs) were synthesized using hydrothermal methods. All GQDs were attached with carbon-doped ZnO nanorods (C-ZnO NRs) grownon fluorine-doped tin oxide (FTO)-coated glass substrates, for the fabrication of metal-free eco-friendly quantum-dotsensitized solar cells (QDSSCs). SNGQD-decorated nanorod-based solar cells demonstrated maximum open circuit voltage($V_{\rm OC}\sim 360$ mV), short circuit current ($J_{\rm SC}\sim 1.84$ mA cm$^{−2}$) and power conversion efficiency ($\eta \sim 0.293$%) comparedto other devices.

[学科分类] 材料工程

[关键词] GQDs;C-ZnO NR;QDSSC.