Sharma, Shailesh N. and Kumar, Umesh and Vats , Tanvi and Arora, Manju and Singh, V. N. and Mehta, B. R. and Jain, Kiran and Kakkar , Rita and Narula, A. K. (2010) Hybrid organic-inorganic (MEH-PPV/P3HT:CdSe) nanocomposites: linking film morphology to photostability. The European Physical Journal Applied Physics , 50 (2). pp. 1-24. ISSN 10.1051/epjap/2010048

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In this work, TOPO(tri-octyl phosphine oxide)/TOP(tri-octyl phosphine)-capped cadmium selenide (CdSe) quantum dots (QD's) of varied sizes (5–9 nm) prepared at different input Cd:Se precursor ratio's (1:1–2:1) using chemical route were dispersed in conducting polymer matrices viz poly[2-methoxy,5-(2-ethyl-hexyloxy)-1,4-phenylene vinylene] (MEH-PPV) and poly(3-hexylthiophene) (P3HT) respectively. The properties of polymer:CdSe nanocomposites are evaluated by means of photoluminescence (PL), UV-VIS absorption, Raman, Fourier transform infrared (FTIR), transmission electron microscopy (TEM) and atomic force microscopy (AFM) techniques respectively. The emission and structural properties of polymer-CdSe nanocomposites are found to be dependent on their morphology. The better quality of smallest sized CdSe QD's (size ~5 nm) in conjunction with regioregular P3HT polymer, leads to higher photostability of P3HT:CdSe QD's nanocomposites as compared to that for corresponding MEH-PPV:CdSe nanocomposites, thus making it as an attractive candidate for hybrid solar cells application.

Item Type: Article
Additional Information: Copyright for this article belongs to M/s Cambridge University Press.
Subjects: Physics
Depositing User: Ms Neetu Chandra
Date Deposited: 03 May 2012 11:51
Last Modified: 03 May 2012 11:55

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