alexa Wide Band Gap Quantum Dots Sensitized α-Fe2O3 Thin Film For Solar Generation Of Hydrogen
ISSN: 2157-7439

Journal of Nanomedicine & Nanotechnology
Open Access

Like us on:
OMICS International organises 3000+ Global Conferenceseries Events every year across USA, Europe & Asia with support from 1000 more scientific Societies and Publishes 700+ Open Access Journals which contains over 50000 eminent personalities, reputed scientists as editorial board members.

Open Access Journals gaining more Readers and Citations

700 Journals and 15,000,000 Readers Each Journal is getting 25,000+ Readers

This Readership is 10 times more when compared to other Subscription Journals (Source: Google Analytics)

Share This Page

Additional Info

Loading
Loading Please wait..
 

4th International Conference on Nanotek & Expo
December 01-03, 2014 DoubleTree by Hilton Hotel San Francisco Airport, USA

Ashi Ikram, Sonal Sahaa, Snigdha Rai, Sahab Dass, Rohit Shrivastava and Vibha R Satsangi
ScientificTracks Abstracts: J Nanomed Nanotechnol
DOI: 10.4172/2157-7439.S1.017
Abstract
Conversion of solar energy into the hydrogen via photoelectrochemical (PEC) splitting of water is expected to fulfill the future energy demand. Today, a major impediment in the commercial viability of PEC splitting of water is its low efficiency exhibited by existing semiconductor photoelectrodes. In the search of suitable semiconductor, use of quantum dot modified metal oxide semiconductor needs to be explored. Quantum dots (QDs) are identified for their unique optical, electrical and chemical properties, which makes it applicable in solar energy applications. In this paper, hematite has been chosen as a main solar energy absorber, while ZnO QDs decorated over it, as an efficient electron transport across the interface by reducing charge carrier recombination rate. In the present study, doped hematite films have been synthesized by electrodeposition method. These films were subjected to sensitization by ZnO quantum dots, prepared by chemical route, for 24, 48, and 72 hours. These sensitized films showed a significant increase in the photocurrent density as compared to unsensitized film in PEC cell. Red shifts in the absorption band edge and reduction in carrier recombination rate may be the major factors responsible for this enhancement. XRD confirmed the presence of hematite with rhombohedral structure and ZnO?s with hexagonal structure, both in polycrystalline form. Size of ZnO QDs was ~11 nm, as examined by HRTEM. FE-SEM images confirmed the fact that pores of hematite have been filled with ZnO QDs. The enhanced photo response has also been supported by increased negative value of flat band potential after sensitization.
Biography
Ashi Ikram is currently pursuing PhD from Dayalbagh Educational Institute, India in the field of Material Science. She has qualified National Eligibility Test for JRF/ lectureship in 2012 conducted by university grant commission and currently. She has published 3 papers in the international SCI journals and attended many national conferences.
image PDF   |   image HTML
 
Peer Reviewed Journals
 
Make the best use of Scientific Research and information from our 700 + peer reviewed, Open Access Journals
International Conferences 2017-18
 
Meet Inspiring Speakers and Experts at our 3000+ Global Annual Meetings

Contact Us

 
© 2008-2017 OMICS International - Open Access Publisher. Best viewed in Mozilla Firefox | Google Chrome | Above IE 7.0 version
adwords