Random Polyfluorene Co-Polymers Designed For A Better Optical Absorption Coverage Of The Visible Region Of The Electromagnetic Spectrum

Desta Gedefaw; Zaifei Ma; Patrik Henriksson; Fengling Zhang; Mats R. Andersson; Wendimagegn Mammo

doi:10.4314/bcse.v28i1.14

Random Polyfluorene Co-Polymers Designed For A Better Optical Absorption Coverage Of The Visible Region Of The Electromagnetic Spectrum

Desta Gedefaw, Zaifei Ma, Patrik Henriksson, Fengling Zhang, Mats R. Andersson, Wendimagegn Mammo

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

Two alternating polyfluorenes (APFO15-F8BT and APFO3-F8BT) with full absorption of the visible region of the electromagnetic radiation were designed and synthesized for bulk-heterojunction solar cell devices. The optical and electrochemical properties of the two polymers were studied. The two polymers exhibited strong absorption in the visible region with no significant valley over the visible region extending up to 650 nm. Deep HOMO and ideally situated LUMO energy levels were the characteristics of the two polymers as revealed from the square wave voltammogram study: desired properties for extracting high open circuit voltage and for a facile charge transfer to the acceptor component in devices to take place, respectively. Photovoltaic devices were fabricated by blending the two polymers with PCBM[70] and up to ~2% power conversion efficiency were obtained.

Original language	English
Pages (from-to)	121-130
Number of pages	10
Journal	BULLETIN OF THE CHEMICAL SOCIETY OF ETHIOPIA
Volume	28
Issue number	1
DOIs	https://doi.org/10.4314/bcse.v28i1.14
Publication status	Published - 2014

Keywords

Bulk-heterojunction solar cells
HOMO and LUMO
Optical absorption
Polyfluorenes

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title = "Random Polyfluorene Co-Polymers Designed For A Better Optical Absorption Coverage Of The Visible Region Of The Electromagnetic Spectrum",

abstract = "Two alternating polyfluorenes (APFO15-F8BT and APFO3-F8BT) with full absorption of the visible region of the electromagnetic radiation were designed and synthesized for bulk-heterojunction solar cell devices. The optical and electrochemical properties of the two polymers were studied. The two polymers exhibited strong absorption in the visible region with no significant valley over the visible region extending up to 650 nm. Deep HOMO and ideally situated LUMO energy levels were the characteristics of the two polymers as revealed from the square wave voltammogram study: desired properties for extracting high open circuit voltage and for a facile charge transfer to the acceptor component in devices to take place, respectively. Photovoltaic devices were fabricated by blending the two polymers with PCBM[70] and up to ~2% power conversion efficiency were obtained.",

keywords = "Bulk-heterojunction solar cells, HOMO and LUMO, Optical absorption, Polyfluorenes",

author = "Desta Gedefaw and Zaifei Ma and Patrik Henriksson and Fengling Zhang and Andersson, {Mats R.} and Wendimagegn Mammo",

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AU - Gedefaw, Desta

AU - Ma, Zaifei

AU - Henriksson, Patrik

AU - Zhang, Fengling

AU - Andersson, Mats R.

AU - Mammo, Wendimagegn

PY - 2014

Y1 - 2014

N2 - Two alternating polyfluorenes (APFO15-F8BT and APFO3-F8BT) with full absorption of the visible region of the electromagnetic radiation were designed and synthesized for bulk-heterojunction solar cell devices. The optical and electrochemical properties of the two polymers were studied. The two polymers exhibited strong absorption in the visible region with no significant valley over the visible region extending up to 650 nm. Deep HOMO and ideally situated LUMO energy levels were the characteristics of the two polymers as revealed from the square wave voltammogram study: desired properties for extracting high open circuit voltage and for a facile charge transfer to the acceptor component in devices to take place, respectively. Photovoltaic devices were fabricated by blending the two polymers with PCBM[70] and up to ~2% power conversion efficiency were obtained.

AB - Two alternating polyfluorenes (APFO15-F8BT and APFO3-F8BT) with full absorption of the visible region of the electromagnetic radiation were designed and synthesized for bulk-heterojunction solar cell devices. The optical and electrochemical properties of the two polymers were studied. The two polymers exhibited strong absorption in the visible region with no significant valley over the visible region extending up to 650 nm. Deep HOMO and ideally situated LUMO energy levels were the characteristics of the two polymers as revealed from the square wave voltammogram study: desired properties for extracting high open circuit voltage and for a facile charge transfer to the acceptor component in devices to take place, respectively. Photovoltaic devices were fabricated by blending the two polymers with PCBM[70] and up to ~2% power conversion efficiency were obtained.

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Random Polyfluorene Co-Polymers Designed For A Better Optical Absorption Coverage Of The Visible Region Of The Electromagnetic Spectrum

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Keywords

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