Structural and electrical properties of fluorinated copper phthalocyanine toward organic photovoltaics: Post-annealing effect under pressure

Abstract

The morphology and current–voltage characteristics of organic films with copper phthalocyanine (CuPc) and hexadecafluoro CuPc (F16CuPc) prepared under different conditions have been investigated. Substrate heating improved the current–voltage characteristics of CuPc single-layer devices. Also, substrate heating from room temperature suppressed breakdown at low voltages in F16CuPc devices. In addition, the post-annealing effects under pressure on the current–voltage characteristics of CuPc/F16CuPc devices were investigated. Although a CuPc/F16CuPc device prepared at a substrate temperature of 120 °C exhibited a reverse rectifying property and provided no photocurrent, a CuPc/F16CuPc device post-annealed at 300 °C under pressure showed a normal rectifying property and worked as a photovoltaic cell.

In-situ synthesis of phthalocyanines on electrospun TiO2 nanofiber by solvothermal process for photocatalytic degradation of methylene blue

“…As suggested in the literature, the presence of broad peaks around 14.8 o (200), 21.1 o to 30.4 o (100) and at 42 o to 46 o (100) [44,45] for TiO2/FCoPc and broad peaks around 15.7 o to 30.2 o (100) [46] for TiO2/FPc support to the formation of different Pc's on TiO2 nanofiber.…”

Crystal structure tuning in organic nanomaterials for fast response and high sensitivity visible-NIR photo-detector

“…13 Copper hexadecafluorophthalocyanines (F 16 CuPc), as airstable n-type organic semiconductors, have been widely applied in OLED, 14 OFET 15 and organic solar cells, 16 owing to their excellent electrical and optical properties, such as a relatively high mobility of 0.6 cm2 V-1s-1 and broad optical absorption spectrum compared to other organic semiconductors. [17][18][19][20] What is more important is that, compared with CuPc, these outstanding properties mainly stem from a shorter π-π stacking inter-molecular-plane distance (~3.25 Å) in F 16 CuPc, yet that of MPc is ~3.4 Å.…”

Organic and Organometallic Fluorinated Materials for Electronics and Optoelectronics: A Survey on Recent Research

“…Among organometallic complexes, fluorinated copper phthalocyanines have been reported as efficient electron transporting materials for photovoltaic applications , . Deposition of nanowires of copper hexadecafluorophthalocyanine (F 16 CuPc in Figure ) between the indium tin oxide anode and the n‐type semiconducting ZnO layer was found to enhance ( i ) the interfacial electron transport in inverted solar cells, ( ii ) the short circuit current densities ( J sc ) and ( iii ) the power conversion efficiencies (PCE) vs. the cells made only with ZnO layers (PCE 3.6 % vs. 3.0 % and 8.6 % vs. 8.1 % for P3HT:PC 61 BM and PTB7:PC 71 BM cells, respectively) .…”

“…Among organometallic complexes, fluorinated copper phthalocyanines have been reported as efficient electron transporting materials for photovoltaic applications. [28,29] Deposition of nanowires of copper hexadecafluorophthalocyanine (F 16 CuPc in Figure 6) between the indium tin oxide anode and the n-type 71 BM cells, respectively). [28] Such improvement was attributed to the stable n-type semiconducting properties of F 16 CuPc, the faceon alignment of the π-stacked nanowires along the device current flow direction and the enhanced surface area of F 16 CuPc nanowires embedded in the ZnO film.…”