NDLI: Fabrication of ordered bulk heterojunction organic photovoltaic cells using nanopatterning and electrohydrodynamic spray deposition methods

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Fabrication of ordered bulk heterojunction organic photovoltaic cells using nanopatterning and electrohydrodynamic spray deposition methods

Content Provider	Royal Society of Chemistry (RSC)
Author	Kim, Sehwan Joe, Hang-Eun Min, Byung-Kwon Jung, Buyoung Hwang, Jungho Kim, Woochul Kim, Eunkyoung Park, Sung-Eun Kim, Kangmin
Copyright Year	2012
Abstract	Organic photovoltaic cells with an ordered heterojunction (OHJ) active layer are expected to show increased performance. In the study described here, OHJ cells were fabricated using a combination of nanoimprinting and electrohydrodynamic (EHD) spray deposition methods. After an electron donor material was nanoimprinted with a PDMS stamp (valley width: 230 nm, period: 590 nm) duplicated from a Si nanomold, an electron acceptor material was deposited onto the nanoimprinted donor layer using an EHD spray deposition method. The donor–acceptor interface layer was observed by obtaining cross-sectional images with a focused ion beam (FIB) microscope. The photocurrent generation performance of the OHJ cells was evaluated with the current density–voltage curve under air mass (AM) 1.5 conditions. It was found that the surface morphology of the electron acceptor layer affected the current and voltage outputs of the photovoltaic cells. When an electron acceptor layer with a smooth thin (250 nm above the valley of the electron donor layer) surface morphology was obtained, power conversion efficiency was as high as 0.55%. The electrohydrodynamic spray deposition method used to produce OHJ photovoltaic cells provides a means for the adoption of large area, high throughput processes.
Starting Page	7773
Ending Page	7779
Page Count	7
File Format	HTM / HTML PDF
ISSN	20403364
Volume Number	4
Issue Number	24
Journal	Nanoscale
DOI	10.1039/c2nr32165c
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Solar cell Photocurrent Organic solar cell Ion Amplitude modulation Electrohydrodynamics Electron donor Electron acceptor Heterojunction
Content Type	Text
Resource Type	Article
Subject	Nanoscience and Nanotechnology

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