Interfacial layers and semi-transparent electrodes for large area flexible organic photovoltaics

Publikation: Bog/antologi/afhandling/rapportPh.d.-afhandlingForskning

Resumé

Organic photovoltaics (OPVs), being eco-friendly and inexpensive to produce, are considered as the potential sustainable energy source for the future. However, on the way to their commercialization, performance improvements still have to be obtained, especially for large-scale devices, which significantly lack behind their inorganic counterpart. This study addresses these issues, and the results are presented in two sections. The first section focuses on the enhancement of OPV performance by incorporation of interfacial layers in form of exciton blocking and electron transport layers that reduce the exciton recombination and charge carrier losses in the devices.

I report on the implementation of a novel exciton blocking layer of an intrinsic organic material, ‘N,N'-di-1-naphthalenyl-N,N'-diphenyl [1,1':4',1'':4'',1‴-quaterphenyl]-4,4‴-diamine (4P-NPD)’, in organic small molecule-based OPVs. Using this interlayer, the efficiency of OPV devices increased by approx. 24 % compared to reference devices. I also report on the use the use of electron transport layer of organic material ‘2,9-Dimethyl-4,7-diphenyl-1,10-phenanthroline (Bathocuproine, BCP)’ for inverted small molecule-based lab-scale and up-scaled OPVs. The pronounced clustering of the BCP layer lead to increasing discrepancies in the device performance with the increase in the device size, which disqualifies it for use of in the inverted large area OPVs.

The second section deals with up-scaling of highly conductive semi-transparent electrodes for rigid as well as flexible substrates that prevent the resistive losses in the large area OPVs. Here, I report on the newly developed highly conductive semi-transparent electrodes, based on current collecting grids of silver embedded in indium tin oxide (ITO) layers on glass and flexible substrates, which successfully diminish the performance losses in large area OPVs due to the reduced resistance of semi-transparent electrodes.
OriginalsprogEngelsk
ForlagMads Clausen Institute, University of Southern Denmark
Antal sider125
StatusUdgivet - 13. okt. 2017

Fingeraftryk

Electrodes
Molecules
Diamines
Substrates
Charge carriers
Silver
Glass
bathocuproine
LDS 751
Electron Transport
neodymium pyrocatechin disulfonate
diphenyl
indium tin oxide

Citer dette

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title = "Interfacial layers and semi-transparent electrodes for large area flexible organic photovoltaics",
abstract = "Organic photovoltaics (OPVs), being eco-friendly and inexpensive to produce, are considered as the potential sustainable energy source for the future. However, on the way to their commercialization, performance improvements still have to be obtained, especially for large-scale devices, which significantly lack behind their inorganic counterpart. This study addresses these issues, and the results are presented in two sections. The first section focuses on the enhancement of OPV performance by incorporation of interfacial layers in form of exciton blocking and electron transport layers that reduce the exciton recombination and charge carrier losses in the devices. I report on the implementation of a novel exciton blocking layer of an intrinsic organic material, ‘N,N'-di-1-naphthalenyl-N,N'-diphenyl [1,1':4',1'':4'',1‴-quaterphenyl]-4,4‴-diamine (4P-NPD)’, in organic small molecule-based OPVs. Using this interlayer, the efficiency of OPV devices increased by approx. 24 {\%} compared to reference devices. I also report on the use the use of electron transport layer of organic material ‘2,9-Dimethyl-4,7-diphenyl-1,10-phenanthroline (Bathocuproine, BCP)’ for inverted small molecule-based lab-scale and up-scaled OPVs. The pronounced clustering of the BCP layer lead to increasing discrepancies in the device performance with the increase in the device size, which disqualifies it for use of in the inverted large area OPVs. The second section deals with up-scaling of highly conductive semi-transparent electrodes for rigid as well as flexible substrates that prevent the resistive losses in the large area OPVs. Here, I report on the newly developed highly conductive semi-transparent electrodes, based on current collecting grids of silver embedded in indium tin oxide (ITO) layers on glass and flexible substrates, which successfully diminish the performance losses in large area OPVs due to the reduced resistance of semi-transparent electrodes.",
author = "Patil, {Bhushan Ramesh}",
year = "2017",
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Interfacial layers and semi-transparent electrodes for large area flexible organic photovoltaics. / Patil, Bhushan Ramesh.

Mads Clausen Institute, University of Southern Denmark, 2017. 125 s.

Publikation: Bog/antologi/afhandling/rapportPh.d.-afhandlingForskning

TY - BOOK

T1 - Interfacial layers and semi-transparent electrodes for large area flexible organic photovoltaics

AU - Patil, Bhushan Ramesh

PY - 2017/10/13

Y1 - 2017/10/13

N2 - Organic photovoltaics (OPVs), being eco-friendly and inexpensive to produce, are considered as the potential sustainable energy source for the future. However, on the way to their commercialization, performance improvements still have to be obtained, especially for large-scale devices, which significantly lack behind their inorganic counterpart. This study addresses these issues, and the results are presented in two sections. The first section focuses on the enhancement of OPV performance by incorporation of interfacial layers in form of exciton blocking and electron transport layers that reduce the exciton recombination and charge carrier losses in the devices. I report on the implementation of a novel exciton blocking layer of an intrinsic organic material, ‘N,N'-di-1-naphthalenyl-N,N'-diphenyl [1,1':4',1'':4'',1‴-quaterphenyl]-4,4‴-diamine (4P-NPD)’, in organic small molecule-based OPVs. Using this interlayer, the efficiency of OPV devices increased by approx. 24 % compared to reference devices. I also report on the use the use of electron transport layer of organic material ‘2,9-Dimethyl-4,7-diphenyl-1,10-phenanthroline (Bathocuproine, BCP)’ for inverted small molecule-based lab-scale and up-scaled OPVs. The pronounced clustering of the BCP layer lead to increasing discrepancies in the device performance with the increase in the device size, which disqualifies it for use of in the inverted large area OPVs. The second section deals with up-scaling of highly conductive semi-transparent electrodes for rigid as well as flexible substrates that prevent the resistive losses in the large area OPVs. Here, I report on the newly developed highly conductive semi-transparent electrodes, based on current collecting grids of silver embedded in indium tin oxide (ITO) layers on glass and flexible substrates, which successfully diminish the performance losses in large area OPVs due to the reduced resistance of semi-transparent electrodes.

AB - Organic photovoltaics (OPVs), being eco-friendly and inexpensive to produce, are considered as the potential sustainable energy source for the future. However, on the way to their commercialization, performance improvements still have to be obtained, especially for large-scale devices, which significantly lack behind their inorganic counterpart. This study addresses these issues, and the results are presented in two sections. The first section focuses on the enhancement of OPV performance by incorporation of interfacial layers in form of exciton blocking and electron transport layers that reduce the exciton recombination and charge carrier losses in the devices. I report on the implementation of a novel exciton blocking layer of an intrinsic organic material, ‘N,N'-di-1-naphthalenyl-N,N'-diphenyl [1,1':4',1'':4'',1‴-quaterphenyl]-4,4‴-diamine (4P-NPD)’, in organic small molecule-based OPVs. Using this interlayer, the efficiency of OPV devices increased by approx. 24 % compared to reference devices. I also report on the use the use of electron transport layer of organic material ‘2,9-Dimethyl-4,7-diphenyl-1,10-phenanthroline (Bathocuproine, BCP)’ for inverted small molecule-based lab-scale and up-scaled OPVs. The pronounced clustering of the BCP layer lead to increasing discrepancies in the device performance with the increase in the device size, which disqualifies it for use of in the inverted large area OPVs. The second section deals with up-scaling of highly conductive semi-transparent electrodes for rigid as well as flexible substrates that prevent the resistive losses in the large area OPVs. Here, I report on the newly developed highly conductive semi-transparent electrodes, based on current collecting grids of silver embedded in indium tin oxide (ITO) layers on glass and flexible substrates, which successfully diminish the performance losses in large area OPVs due to the reduced resistance of semi-transparent electrodes.

M3 - Ph.D. thesis

BT - Interfacial layers and semi-transparent electrodes for large area flexible organic photovoltaics

PB - Mads Clausen Institute, University of Southern Denmark

ER -

Patil BR. Interfacial layers and semi-transparent electrodes for large area flexible organic photovoltaics. Mads Clausen Institute, University of Southern Denmark, 2017. 125 s.