PRESS RELEASE – Zinc oxide-graphene solar cells could provide new opportunities

The article by Dr. Hieu P. T. Nguyen et al. is published in Current Nanomaterials, 2018

Researchers from NJIT (New Jersey Institute of Technology, New Jersey, USA) in collaboration with researchers from CSIR-CECRI (Central Scientific Industrial Research Institute – Central Electrochemical Research Institute, Tamil Nadu, India) have fabricated a new kind of dye sensitized solar cells (DSSC) based on zinc oxide-graphene (ZnO-G) composites, having a flake like morphology. The polyol approach used for synthesis of the composite material can be envisioned for future low-cost, transparent and flexible solar cells that will be installed on surfaces including windows, roofs in the near future.

The novel technique for the fabrication has been developed by a 3rd year Ph.D. student Moab Rajan Philip and Dr. Hieu P Nguyen, Assistant Professor in the Electrical and Computer Engineering Department of NJIT and is reported in Current Nanomaterials-Bentham Science Publishers. The paper is co-authored by Rupesh K Babu, V. Krishnakumar and T. Bui who are researchers in CSIR-CECRI and NJIT respectively.

Zinc Oxide (ZnO) is a multifunctional semiconductor material that can be fabricated at low temperatures. The wide energy bandgap, radiation resistance, high chemical stability, and high excitation binding energy leads to ZnO offering huge potential in applications involving sensors, light-emitting diodes (LEDs), piezoelectric devices, solar cells, short wavelength lasers and transistors. In addition, ZnO offers superior electrical and optical properties that include high electron mobility in the order of 1500 cm2V-1s-1 at room temperature, a wide band gap energy of 3.3 eV and a high exciton (electron-hole) binding energy of 60 meV. Graphene, which is one of the most exciting 2D materials known to man, exhibits superior properties such as ultrahigh electron mobility, large surface area, high chemical and thermal stability, excellent electrical and optical properties. The ZnO-G composites exhibited in the study significantly enhanced photoluminescence which was around 8 times stronger than that of ZnO samples, attributed to the contribution of plasmonic effect of graphene in ZnO-G. It has been reported that the drawback of poor catalytic activity in ZnO due to its photoelectron recombination is known can be overwhelmed by the incorporation of graphene into ZnO matrix thereby improving its photodegradation efficiency and reducing photoelectron recombination. The latter reasons along with the ZnO-G composite’s photosensitivity, electron transport capability, chemical stability and better light adsorption make it an interesting material for the future era electronic devices.

“We’ve demonstrated that devices based on ZnO-G have an excellent conversion efficiency compared to ZnO”- Moab and Prof. Nguyen (lead authors of the paper) says. The conversion efficiency of ZnO-G DSSCs is greatly increased compared to that of the bare ZnO devices which are 0.438% and 0.067%, respectively. Moreover the authors add that the low-cost polyol process, in addition to being simple and facile, do have the benefits of being environmentally friendly along with large scale production. The team studied the fabricated samples via characterization techniques such as X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), laser raman spectroscopy, scanning electron microscopy (SEM), energy dispersive X-ray analysis (EDX), photoluminescence spectroscopy (PL) and dye sensitized solar cell (DSSC) studies. Moab adds “The initial work is promising and excellent and might pave the way for future investigations into similar material oxide material systems will help us to reach potential long term real applications.” Prof. Hieu comments that “The high surface area hexagonal wurtzite ZnO particles thus fabricated by inexpensive and environmentally friendly polyol route can ultimately lead to being used as a suitable anode material in DSSCs as well as an excellent catalyst/adsorbent.”

For more information on this research study, please visit: http://www.eurekaselect.com/161876

UPCOMING THEMATIC ISSUE – ENERGY CONVERSION AND STORAGE WITH NANOFLUIDS – CURRENT NANOMATERIALS

CN-THEMATIC FLYER-Current Nanomaterials

https://benthamscience.com/journals/current-nanomaterials/

UPCOMING THEMATIC ISSUE – NANOMATERIAL COMPOSITES IN ENGINEERING APPLICATIONS – CURRENT NANOMATERIALS

CN-THEMATIC FLYER-Dr. Selim Gürgen

http://www.eurekaselect.com/137069/journal/current-nanomaterials

UPCOMING THEMATIC ISSUE – ENERGY CONVERSION AND STORAGE WITH NANOFLUIDS – CURRENT NANOMATERIALS

CN-THEMATIC FLYER-Current Nanomaterials

https://benthamscience.com/journals/current-nanoscience/#top

WISHING A VERY HAPPY BIRTHDAY TO PROF. MANOJ GUPTA!

Prof. Manoj Gupta

PROF. MANOJ GUPTA

EDITOR-IN-CHIEF: Current Nanomaterials

Department of Mechanical Engineering, National University of Singapore
(NUS)
Singapore

Upcoming Thematic Issue – Nanomaterials for Optoelectronics Energy Storage Applications – Current Nanomaterials

CN- THEMATIC FLYER -Dr. Faheem K. Butt

http://benthamscience.com/journals/cnm/special-issues/

New Issue :: Current Nanomaterials, 1 Issue 2

Current Nanomaterials, a peer reviewed journal publishes reviews, original research articles and thematic issues on experimental and applied research on nanomaterials. The scope covers the synthesis, structure, properties, characterization and application of nanomaterials. The journal will cover all areas of nanomaterial science, engineering and nanotechnology with emphasis on all aspects of research on a wide range of nanomaterials including nanocomposites, inorganic materials, polymeric and biological materials and hybrid materials.

This inter-disciplinary journal will be of interest to scientists in both the physical and biomedical /pharmaceutical related disciplines in nanoscience research.

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Articles from the journal Current Nanomaterials, 1 Issue 2:

For details on the articles, please visit this link :: http://bit.ly/2eXWsye

New Issue ::: Current Nanomaterials

Current Nanomaterials, a peer reviewed journal publishes reviews, original research articles and thematic issues on experimental and applied research on nanomaterials. The scope covers the synthesis, structure, properties, characterization and application of nanomaterials. The journal will cover all areas of nanomaterial science, engineering and nanotechnology with emphasis on all aspects of research on a wide range of nanomaterials including nanocomposites, inorganic materials, polymeric and biological materials and hybrid materials.

This inter-disciplinary journal will be of interest to scientists in both the physical and biomedical /pharmaceutical related disciplines in nanoscience research.

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Articles from the journal Current Nanomaterials, Volume 1 Issue 1:

  • Chemical Hydride Hydrolysis For H2 Production Via Co, Cu, Ni Metal Nanoparticles Prepared Within P(4-VP) Capsules
  • Recent Developments in the Green Syntheses of Chalcogenide Based Semi-conductor Nanoparticles
  • A Comparison of Temperature Dependence of I-V Characteristics in CNTFETs Models
  • Influence of Anisotropy on the Optical Refractive Index Change of Impurity Doped Quantum Dots in Presence of Gaussian White Noise
  • Shape-controlled Nano-sized Metal Oxides for Catalytic Abatement of Diesel Soot Emissions

 

For details on the articles, please visit this link :: http://bit.ly/1OgtAbr

Inaugural issue of the new journal Current Nanomaterials

cnm

Total EABMs: 22

Editor-in-Chief:

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Manoj Gupta

Department of Mechanical Engineering

National University of Singapore (NUS)

Singapore

For issue details: CNM_Contents-1-1

Current Nanomaterials, a peer reviewed journal publishes reviews, original research articles and thematic issues on experimental and applied research on nanomaterials. The scope covers the synthesis, structure, properties, characterization and application of nanomaterials. The journal will cover all areas of nanomaterial science, engineering and nanotechnology with emphasis on all aspects of research on a wide range of nanomaterials including nanocomposites, inorganic materials, polymeric and biological materials and hybrid materials.

This inter-disciplinary journal will be of interest to scientists in both the physical and biomedical /pharmaceutical related disciplines in nanoscience research.

Current Nanomaterials, Volume 1 – Number 1

“Recent Developments in the Green Syntheses of Chalcogenide Based Semi-conductor Nanoparticles”

Abstract:

Method: In this review, an attempt has been made to survey the recent work of green syntheses on metal-chalcogenide nanoparticles by different routes. The aqueous approach is an advantageous alternative to the conventionally used organometallic route, mainly due to its scalability, environmental friendliness, cost effectiveness and more importantly, the biocompatibility.

Read more here: http://benthamscience.com/journals/current-nanomaterials/volume/1/issue/1/page/12/