Formation and Characterization of Bulk Hetero-Junction Solar Cells Using C<SUB>60</SUB> and Perylene

Abstract

Polymer bulk hetero-junction solar cells were fabricated and the electronic and optical properties were investigated. C 60 and perylene were used as n-type semiconductors, and copper phthalocyanine, zinc phthalocyanine and pentacene were used as p-type semiconductors. Energy levels of the molecules were calculated, and HOMO levels were localized around the main chains of the zinc phthalocyanine and pentacene. Nanostructures of the solar cells were confirmed as mixed nanocrystals by transmission electron microscopy and electron diffraction.

Fabrication and characterization of fullerene/porphyrin bulk heterojunction solar cells

“…However, significant improvements of photovoltaic efficiencies are mandatory for use in future solar power plants. One of the improvements is donor-acceptor (DA) proximity in the devices by using blends of donor-like and acceptor-like molecules or polymers, which is called DA bulkheterojunction solar cells [12][13][14].…”

Microstructures and Photovoltaic Properties of Polysilane/C&lt;sub&gt;60&lt;/sub&gt;-Based Solar Cells

“…The bulk heterojunction solar cells based on copper tetrakis (4-cumylphenoxy) phthalocyanine (CuPc) with C 60 have been studied in the previous work [10]. CuPc showed a wild optical absorption around 700 nm, which would suggest higher potential for photon harvesting.…”

Fabrication and Characterization of Fullerene-Based Bulk Heterojunction Solar Cells with Porphyrin, CuInS2, Diamond and Exciton-Diffusion Blocking Layer

“…Previously reported values were used for the energy levels of the figures by adjusting them to the present work [15,26,31]. When light is incident from the FTO side, excitation by the light absorption happens in the p-n interface, and electrons and holes are produced by charge separation.…”

“…Previously reported values were also used for the energy levels [15]. An energy gap of diamond estimated from Figure 13, which corresponds to absorbance of 506nm, is used for the model.…”

“…However, significant improvements of photovoltaic efficiencies are mandatory for use in future solar power plants. One of the improvements is donor-acceptor (DA) proximity in the devices by using blends of donor-like and acceptor-like molecules or polymers, which are called DA bulk-heterojunction solar cells [13][14][15].…”