Chemical processing of three-dimensional graphene networks on transparent conducting electrodes for depleted-heterojunction quantum dot solar cells.

We present a novel chemical procedure to prepare three-dimensional graphene networks (3DGNs) as a transparent conductive film to enhance the photovoltaic performance of PbS quantum-dot (QD) solar cells. It is shown that 3DGN electrodes enhance electron extraction, yielding a 30% improvement in performance compared with the conventional device.

[1]  Z. Fan,et al.  Hybrid zinc oxide/graphene electrodes for depleted heterojunction colloidal quantum-dot solar cells. , 2015, Physical chemistry chemical physics : PCCP.

[2]  Andre K. Geim,et al.  The rise of graphene. , 2007, Nature materials.

[3]  Juan Ding,et al.  Fabrication of anatase titania inverse opal films using polystyrene templates , 2006 .

[4]  Gregory D. Scholes,et al.  Colloidal PbS Nanocrystals with Size‐Tunable Near‐Infrared Emission: Observation of Post‐Synthesis Self‐Narrowing of the Particle Size Distribution , 2003 .

[5]  P. Kamat,et al.  Fortification of CdSe quantum dots with graphene oxide. Excited state interactions and light energy conversion. , 2012, Journal of the American Chemical Society.

[6]  Lin Gan,et al.  Understanding Charge Transfer at PbS‐Decorated Graphene Surfaces toward a Tunable Photosensor , 2012, Advanced materials.

[7]  Andre K. Geim,et al.  Electric Field Effect in Atomically Thin Carbon Films , 2004, Science.

[8]  Z. Fan,et al.  Physicochemical properties of hybrid graphene–lead sulfide quantum dots prepared by supercritical ethanol , 2015, Journal of Nanoparticle Research.

[9]  W. Choi,et al.  Charge separation and ultraviolet photovoltaic conversion of ZnO quantum dots conjugated with graphene nanoshells , 2012, Nano Research.

[10]  Justin C. Johnson,et al.  Charge trapping in bright and dark states of coupled PbS quantum dot films. , 2012, ACS nano.

[11]  Fang Qian,et al.  High power density microbial fuel cell with flexible 3D graphene-nickel foam as anode. , 2013, Nanoscale.

[12]  V. Bulović,et al.  Emergence of colloidal quantum-dot light-emitting technologies , 2012, Nature Photonics.

[13]  Chang Ming Li,et al.  Layered graphene/quantum dots for photovoltaic devices. , 2010, Angewandte Chemie.

[14]  W. Choi,et al.  Emissive ZnO-graphene quantum dots for white-light-emitting diodes. , 2012, Nature nanotechnology.

[15]  JACS , 2022 .

[16]  Zhiyong Fan,et al.  Highly flexible and transferable supercapacitors with ordered three-dimensional MnO2/Au/MnO2 nanospike arrays , 2015 .

[17]  M. Tavakoli,et al.  Supercritical synthesis and in situ deposition of PbS nanocrystals with oleic acid passivation for quantum dot solar cells , 2015 .

[18]  G. Konstantatos,et al.  Solution-processed PbS quantum dot infrared photodetectors and photovoltaics , 2005, Nature materials.

[19]  Z. Fan,et al.  Quasi Core/Shell Lead Sulfide/Graphene Quantum Dots for Bulk Heterojunction Solar Cells , 2015 .

[20]  James M Tour,et al.  Theoretical efficiency of nanostructured graphene-based photovoltaics. , 2010, Small.

[21]  Cesar A. Barbero,et al.  Polyaniline nanoparticles for near-infrared photothermal destruction of cancer cells , 2015, Journal of Nanoparticle Research.

[22]  A. Shafiekhani,et al.  Supercritical Synthesis and Characterization of Graphene–PbS Quantum Dots Composite with Enhanced Photovoltaic Properties , 2015 .