Layer-by-layer deposition films of copper phthalocyanine derivative; their photoelectrochemical properties and application to solution-processed thin-film organic solar cells

Effects of humidity on the electrical properties of thermal inkjet-printed films of copper tetrasulfonated phthalocyanine (CuTsPc) onto paper substrates

“…Nevertheless, despite the good perspectives for TsPcbased electronics, the number of reports related to this topic is rather limited [6,[18][19][20][21][22][23], principally involving the production of devices using printing methods [22,23]. Most of applications exploiting the water solubility of TsPc molecules are based on layer-by-layer (LbL) assembly for sensors [19,[24][25][26].…”

“…Most of applications exploiting the water solubility of TsPc molecules are based on layer-by-layer (LbL) assembly for sensors [19,[24][25][26]. LbL has also been used to fabricated TsPc-based field-effect transistors [18] and organic solar cells [19], whereas other deposition strategies include the electrodeposition of copper TsPc-based films for dye-sensitized solar cells [6] and spin coating of nickel, aluminum, cobalt, zinc, and copper TsPcs for organic field-effect transistors [21,27]. Regarding the publications using printed TsPcs, Lian et al produced memory devices using copper TsPc and poly(3,4-ehthylenedioxythiophene:polystyrene sulfonate) (PEDOT:PSS) onto plastic substrates [22], whereas Kim et al reported the preparation of several TsPcs inks for color filters in liquid crystal displays [23].…”

Thermal inkjet printing of copper tetrasulfonated phthalocyanine (CuTsPc) as a semiconducting layer on flexible MIS capacitors

“…Organic materials have been studied for years as active compounds for many electronic purposes as the fabrication of field-effect transistors (OFETs) [1][2][3] , photovoltaics (OPVs) [4][5][6] , sensors [7][8][9][10] , memories [11][12][13] , radio-frequency identification tags (RFIDs) 14,15 and light-emitting diodes (OLEDs) [16][17][18] . Such applications become even more interesting when solution-processed organic materials are used to produce low-cost and flexible devices, which can be achieved by printing techniques, for instance [19][20][21] .…”

“…Sulfonated-substituted phthalocyanines have been exploited mainly in OFETs [27][28][29] and OPVs [4][5][6]30 . Regarding OFETs, Locklin et al 27 have produced devices with ambipolar-like behavior using the layer-by-layer (LbL) technique to assemble thin films of cationic and anionic copper phthalocyanine derivatives.…”

“…Finally, the results shown here demonstrate the possibility to produce flexible organic electronic devices exploiting the semiconducting properties of water-soluble CuTsPc molecules using low-cost commercial printers. 6 used LbL method to exploit the characteristics of copper tetrasulfonated phthalocyanine (CuTsPc) in order to obtain power conversion efficiencies (PCE) of 0.01% and open-circuit voltages (V OC ) of approximately 0.4 V, whereas Schumann et al 4 obtained PCE of 0.32% and V OC of 0.6 V for spincoated CuTsPc-based devices. According to Schumann and co-workers such improved characteristics on CuTsPc OPVs arise from the presence of sulfonic acid substituents on the phthalocyanine.…”