CNT work function modification for transparent electrode application in organic photovoltaics

As there is a need to develop higher power conversion efficiency and low cost photovoltaic (PV) cells, Organic PV (OPV) has sparked the interest of many to carry out more research work in this area. Currently Tin-doped indium oxide (ITO) is commonly used for one of the important components of OPV,...

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Main Author: Low, Keith Ying Jie.
Other Authors: Lam Yeng Ming
Format: Final Year Project
Language:English
Published: 2010
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Online Access:http://hdl.handle.net/10356/40422
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-404222023-03-04T15:40:06Z CNT work function modification for transparent electrode application in organic photovoltaics Low, Keith Ying Jie. Lam Yeng Ming School of Materials Science and Engineering DRNTU::Engineering::Materials::Organic/Polymer electronics As there is a need to develop higher power conversion efficiency and low cost photovoltaic (PV) cells, Organic PV (OPV) has sparked the interest of many to carry out more research work in this area. Currently Tin-doped indium oxide (ITO) is commonly used for one of the important components of OPV, i.e. the transparent conductive electrode. Because of ITO inflexibility, it limits its range of flexible application. Hence, Single walled carbon nanotubes (Cnt) are considered as a potential replacement because of its high conductivity and transparency properties but most importantly its flexible property. This project aims to alter the properties of Cnt to make it suitable for OPV applications. This project will focus on using various n- and p-dopants at various concentrations and doping timings to alter the work function and sheet resistance of the Cnt which are the key factors in OPV fabrication. The effects of the doping will be studied and analyzed. The results show that sheet resistance of the Cnt went down by more that 45% and there was in significant increase in the work function at concentration 4M of HNO3, a p- dopant. The n-dopant NADH also shows a 30% decrease in resistance and a fall in work function. The mechanisms of these changes will be discussed in more detail in the report. In conclusion, n- and p-doping can modify the work function and sheet resistance of the material but more future work has to be done to determine whether Cnt can be a viable substitute for ITO which will also be discussed in the report. Bachelor of Engineering (Materials Engineering) 2010-06-15T07:51:21Z 2010-06-15T07:51:21Z 2010 2010 Final Year Project (FYP) http://hdl.handle.net/10356/40422 en Nanyang Technological University 45 p. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic DRNTU::Engineering::Materials::Organic/Polymer electronics
spellingShingle DRNTU::Engineering::Materials::Organic/Polymer electronics
Low, Keith Ying Jie.
CNT work function modification for transparent electrode application in organic photovoltaics
description As there is a need to develop higher power conversion efficiency and low cost photovoltaic (PV) cells, Organic PV (OPV) has sparked the interest of many to carry out more research work in this area. Currently Tin-doped indium oxide (ITO) is commonly used for one of the important components of OPV, i.e. the transparent conductive electrode. Because of ITO inflexibility, it limits its range of flexible application. Hence, Single walled carbon nanotubes (Cnt) are considered as a potential replacement because of its high conductivity and transparency properties but most importantly its flexible property. This project aims to alter the properties of Cnt to make it suitable for OPV applications. This project will focus on using various n- and p-dopants at various concentrations and doping timings to alter the work function and sheet resistance of the Cnt which are the key factors in OPV fabrication. The effects of the doping will be studied and analyzed. The results show that sheet resistance of the Cnt went down by more that 45% and there was in significant increase in the work function at concentration 4M of HNO3, a p- dopant. The n-dopant NADH also shows a 30% decrease in resistance and a fall in work function. The mechanisms of these changes will be discussed in more detail in the report. In conclusion, n- and p-doping can modify the work function and sheet resistance of the material but more future work has to be done to determine whether Cnt can be a viable substitute for ITO which will also be discussed in the report.
author2 Lam Yeng Ming
author_facet Lam Yeng Ming
Low, Keith Ying Jie.
format Final Year Project
author Low, Keith Ying Jie.
author_sort Low, Keith Ying Jie.
title CNT work function modification for transparent electrode application in organic photovoltaics
title_short CNT work function modification for transparent electrode application in organic photovoltaics
title_full CNT work function modification for transparent electrode application in organic photovoltaics
title_fullStr CNT work function modification for transparent electrode application in organic photovoltaics
title_full_unstemmed CNT work function modification for transparent electrode application in organic photovoltaics
title_sort cnt work function modification for transparent electrode application in organic photovoltaics
publishDate 2010
url http://hdl.handle.net/10356/40422
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