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Optical Property and Photoelectrical Performance of a Low-Bandgap Conducting Polymer Incorporated With Quantum Dots Used for Organic Solar Cells

Thi Thao Tran and Quang Trung Tran and Van Truong Vo and Nang Dinh Nguyen (2016) Optical Property and Photoelectrical Performance of a Low-Bandgap Conducting Polymer Incorporated With Quantum Dots Used for Organic Solar Cells. In: SW4PHD: the 2016 Scientific Workshop for PhD Students, 26 March 2016, Hanoi.

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Abstract

By using spin-coating technique, a low bandgap conjugated polymer, poly[2,6-(4,4-bis-(2-ethylhexyl)-4H-cyclopen-ta[2,1-b;3,4-b′]dithiophene)-alt-4,7-(2,1,3-benzothiadiazole)] (PCPDTBT) and its composite thin films have been prepared. The optical absorption and photoconductive properties with over a wide spectral range, from 350 to 950 nm, were characterized. The obtained results showed that PCPDTBT:10 wt% CdSe composite is the most suitable for efficient light-harvesting in polymer-based photovoltaic cells. The photoelectrical conversion efficiency (PCE) of the device with a multilayer structure of ITO/PEDOT/ PCPDTBT:CdSe /LiF/Al reached a value as large as 1.34% with an open-circuit voltage (Voc) = 0.57 V, a short-circuit current density (Jsc) = 4.29 mA/cm2, and a fill factor (FF) = 0.27. This suggests a useful application in further fabrication of quantum dots/polymers based solar cells.

Item Type:Conference or Workshop Item (Poster)
Subjects:Engineering Physics
Divisions:Faculty of Engineering Physics and Nanotechnology (FEPN)
ID Code:1573
Deposited By: Dr Ngoc Thang Bui
Deposited On:23 May 2016 01:09
Last Modified:23 May 2016 01:12

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