Achieving Thickness‐Insensitive Morphology of the Photoactive Layer for Printable Organic Photovoltaic Cells via Side Chain Engineering in Nonfullerene Acceptors

2019 ◽  
Vol 9 (14) ◽  
pp. 1900044 ◽  
Author(s):  
Seongyu Lee ◽  
Kwang Hun Park ◽  
Jong‐Hoon Lee ◽  
Hyungcheol Back ◽  
Min Jae Sung ◽  
...  
Keyword(s):  
Photovoltaic Cells ◽  
Organic Photovoltaic ◽  
Side Chain ◽  
Organic Photovoltaic Cells ◽  
Photoactive Layer

Extrusion of a nano-ordered active layer for organic photovoltaic cells

2017 ◽  
Vol 1 (9) ◽  
pp. 2016-2027 ◽  
Author(s):  
Ali Nourdine ◽  
Lionel Flandin ◽  
Nicole Albérola ◽  
Lara Perrin ◽  
Emilie Planès ◽  
...  
Keyword(s):  
Active Layer ◽  
Photovoltaic Cells ◽  
Extrusion Process ◽  
Organic Photovoltaic ◽  
Organic Photovoltaic Cells ◽  
Photoactive Layer ◽  
First Time

For the first time, an extrusion process is used to produce a perfectly nanostructured organic photoactive layer.

Optical and Dielectric Characteristics of Photoactive Layer Thin Films for Organic Photovoltaic Cells

2012 ◽  
Vol 217-219 ◽  
pp. 695-698
Author(s):  
S.B. Chen ◽  
Z.Y. Zhong
Keyword(s):  
Thin Films ◽  
Photovoltaic Cells ◽  
Optical Bandgap ◽  
Organic Photovoltaic ◽  
Complex Dielectric Constant ◽  
Organic Photovoltaic Cells ◽  
Device Structure ◽  
Photoactive Layer ◽  
Transmittance Spectra ◽  
Double Beam

The thin films of poly[2-methoxy-5-(2'-ethylhexyloxy)-1,4-phenylenevinylene] (MEH- PPV) used as photoactive layer in organic photovoltaic cells were prepared on glass substrates by the spin-coating technique. The transmittance spectra of thin films were measured by a double beam spectrophotometer. The optical constants such as refractive index and extinction coefficient of the thin films were determined from the measured transmittance spectra using the method of whole optical spectrum fitting. The complex dielectric constant and the complex optical conductivity of the thin films were obtained. In addition, the optical bandgap of the thin film were calculated according to the Tauc's law. The results show that the thin films exhibit direct allowed transitions and the optical bandgap is about 2.18 eV. These results provide some useful references for the design and optimization of device structure in organic photovoltaic cells.

scholarly journals Effects of Au Nanoparticle Addition to Hole Transfer Layer in Organic Photovoltaic Cells Based on Phthalocyanines and Fullerene

2011 ◽  
Vol 2011 ◽  
pp. 1-6 ◽  
Author(s):  
Akihiko Nagata ◽  
Takeo Oku ◽  
Tsuyoshi Akiyama ◽  
Atsushi Suzuki ◽  
Yasuhiro Yamasaki ◽  
...  
Keyword(s):  
Energy Levels ◽  
Photovoltaic Cells ◽  
Organic Photovoltaic ◽  
Au Nanoparticle ◽  
Molecular Orbital Calculations ◽  
Organic Photovoltaic Cells ◽  
Transfer Layer ◽  
Hole Transfer ◽  
Transmission Electron ◽  
Conversion Efficiencies

Phthalocyanines/fullerene organic photovoltaic cells were fabricated and characterized. Effects of Au nanoparticle addition to a hole transfer layer were also investigated, and power conversion efficiencies of the photovoltaic cells were improved after blending the Au nanoparticle into PEDOT:PSS. Nanostructures of the Au nanoparticles were investigated by transmission electron microscopy and X-ray diffraction. Energy levels of molecules were calculated by molecular orbital calculations, and the nanostructures and electronic property were discussed.

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