MATERIALS RESEARCH LABORATORY         


Conference pics

 

Photo Gallery

 

Awards & Achievements

 

    NEWS   

 

ICSEM - 2014

p      

 

OUR OBJECTIVE:

Development of novel solid state ionic materials and its device application

 

Science and Technology of Solid State Ionic materials and devices have recently emerged (termed as SOLID STATE IONICS) with the availability of many superionic conductors or solid electrolytes. The materials of choice for electro-chemical device application are solid-solid composites,Fabrication of quantum dot sensitized solar cells,Dye sensitized solar cells,Thin films,

Polymer Electrolytes and Ionic liquids.

 

In Material Research Laboratory (MRL), Sharda University our main research work is focused around the development of materials stated above and their successful application on various electrochemical devices in particular on Quantum dot sensitized solar cells (QDSC), dye sensitized solar cell (DSSC), Ion beam polymer interaction. In MRL, Sharda University we have dynamic group of researchers oriented towards this goal.

 Quantum dot sensitized solar cells (QDSC) are fabricated via following four steps a mesoporous TiO2 layer upon supporting substrate acting as a photoanode, Quantum dots attached upon TiO2 layer playing role of sensitizer, an electrolyte with redox couple and a platinum coated counter electrode.

 

However Dye-sensitized solar cell (DSSC) came in consideration after the pioneering work of Prof. M. Gratzel in the year 1991. It consisted of a combination of three major thin layers sandwiched between two transparent conductive electrodes. These layers are High band-gap nanocrystalline semiconductor coated with a dye, which absorbs light and releases electrons, Electrolyte containing a redox couple which transports electrons from the platinized counter electrode to regenerate the dye and Platinized counter electrode to collect the electrons via an external electronic circuit.

 

  It is known that thick mesoporous film of TiO2 nanoparticles having diameter of 10-20 nm is necessary for high efficient dye-sensitized solar cell (DSSC) since the position of conduction band edge of this material easily allows electron injection from the excited state of the dye. On the other hand, the electrolyte used in DSSC is mostly two types (1) liquid electrolytes (2) solid  electrolytes. However, the liquid electrolytes shows good performance albeit it is still a “threat” for practical application due to many problems. Solid polymer electrolytes is another easy, low cast alternative. The prime aim of this proposed work is to develop a porous TiO2 electrode with  solid polymer electrolyte material which is suitable for DSSC application.

Although the Ionic liquid (IL) have too many useful properties it can not be used in various applications due to their liquid nature at room temperature. One possible approach developed by our group is to doped these ionic liquids in a suitable polymer matrix and obtain the resulting electrolyte in the film form. Using this methodology our group is moving straightforward in developing efficient DSSC using various ionic liquid doped solid polymer electrolyte systems and published ~ 30 International Research Papers in refereed Journals.

 

Ion beam polymer interaction:-

Swift ion interaction with the electron conducting or insulating polymers have been extensively studied so far, but the interaction with the ion conducting polymers (which are electronically insulating) is almost not studied. The main aim of this proposal is to modify the chain length of an ion conducting polymer electrolyte [PEO:NH4I, PEO:Si or PEO:C] so that the crystallinity gets modified vis- -vis the conductivity.

            It is known that the bombardment of polymers by energetic ion produces dramatic changes.

 The original chemical bonding of the polymer gets disrupted and two different possibilities are

seen, viz., cross-linking of the chain or chain scission . The later results to the fragmentation of

the long chain at initial levels and can eventually result to the ejection of polymer fragments

with a wide distribution of molecular masses. The hydrogen can also be released leading to

polymer carbonization

 

Our Mission:

 

Quantum Dot sensitized solar cells (QDSC)

ØImprove Quantum dot

     synthesis rout for better

     assembling.

 

ØSurface modification of

     quantum dot for

     enhancement of

     efficiency and

     performance of QDSC.

 

ØDevelopment of new

     redox couple to optimize

     stability of redox couple

     between sensitizer and

     electrolyte.

Ø Improve interfacial

     properties.

 

  Dye-sensitized solar cells (DSSC)

ØDevelopment of polymer

      electrolyte having long

      term stability.

 

ØDevelopment of polymer

     electrolyte with high

     ionic conductivity

     through doping of ionic

     liquids.

 

ØDevelopment of polymer

     electrolyte having

     optimum interfacial

     properties.

 

Ø Development of

      semiconductor doped

      polymer electrolyte.

 

Ø Modification of surface

     of working electrode.

 

Ion beam polymer interaction:

ØControlled interaction with the

     reactive ions can be further

     explored and polymer

     electrolyte can be tailored as

     per device requirement.

 

 

Facilities available in MRL:

  • Synthesis Facilities:

i) Vacuum Coating Unit

ii) Fume Hood

iii) Spin Coater

iv) Oven

v) Programmable Muffle Furnace

vi) Vacuum Oven

vii) Microwave Oven

viii) Stirrer

ix) Microbalance

  • Characterisation Facilities:

i) CH - Electrochemical Work Station

ii) Keithley - Source Meter

iii) UV-Visible Spectrophotometer

materialsresearchlab.net © 2010Privacy Policy • Terms of Use