Wavelength selectivities of organic photoconductive films: Dye-doped polysilanes and zinc phthalocyanine/tris-8-hydroxyquinoline aluminum double layer

Organic photoconductors sensitive to blue, green, and red light were fabricated using coumarin 6 (C6)-doped poly(m-hexoxyphenyl)phenylsilane (PHPPS), rhodamine 6G (R6G)-doped polymethylphenylsilane (PMPS), and zinc phthalocyanine (ZnPc)/tris-8-hydroxyquinoline aluminum (Alq3) double layer, respectively. Selectivities of the spectral responses of these films were good enough to divide the incident light into three color components, indicating the possibility of color separation without prism for video cameras. The quantum efficiency of a ZnPc/Alq3 double-layer film is over an order of magnitude better than those of C6/PHPPS and R6G/PMPS blend films due to the dissociation of electron–hole pair generated at the interface between ZnPc and Alq3.

[1]  S. Hoshino,et al.  Behavior of charge carriers and excitons in multilayer organic light‐emitting diodes made from a polysilane polymer as monitored with electroluminescence , 1996 .

[2]  Stephen R. Forrest,et al.  Electroluminescence mechanisms in organic light emitting devices employing a europium chelate doped in a wide energy gap bipolar conducting host , 2000 .

[3]  Jerry C. Whitaker,et al.  Television engineering handbook , 1986 .

[4]  J. Michl,et al.  Polysilane high polymers , 1989 .

[5]  N. Kamata,et al.  Efficient intermolecular energy transfer between soluble polysilanes , 2000 .

[6]  Moses,et al.  Sensitization of the photoconductivity of conducting polymers by C60: Photoinduced electron transfer. , 1993, Physical review. B, Condensed matter.

[7]  C. Tang.  Two‐layer organic photovoltaic cell , 1986 .

[8]  Tachibana,et al.  Nonlinear optical spectroscopy on one-dimensional excitons in silicon polymer, polysilane. , 1992, Physical review letters.

[9]  C. Tang,et al.  Organic Electroluminescent Diodes , 1987 .

[10]  Mats Andersson,et al.  Laminated fabrication of polymeric photovoltaic diodes , 1998, Nature.

[11]  Kurtz,et al.  Photocarrier generation and transport in sigma -bonded polysilanes. , 1987, Physical review. B, Condensed matter.

[12]  J. Hummelen,et al.  Polymer Photovoltaic Cells: Enhanced Efficiencies via a Network of Internal Donor-Acceptor Heterojunctions , 1995, Science.

[13]  Katsutoshi Nagai,et al.  Poly(methylphenylsilane) film as a hole transport layer in electroluminescent devices , 1991 .

[14]  Kazuya Tada,et al.  Photoinduced charge separation in photovoltaic cell with heterojunction of p- and n-type conjugated polymers , 1998 .

[15]  J. Simmerer,et al.  Electroluminescent devices based on poly(methylphenylsilane) , 1993 .

[16]  Masayoshi Yoshida,et al.  Ultraviolet Electroluminescent Diode Utilizing Poly(methylphenylsilane) , 1995 .

[17]  H. Zhang,et al.  Electronic structure and spectrum third-order nonlinear optics of the metal phthalocyanines PcM (M=Zn, Ni, TiO) , 2001 .

[18]  S. Hoshino,et al.  Near-ultraviolet electroluminescent performance of polysilane-based light-emitting diodes with a double-layer structure , 2000 .

[19]  S. Toyoda,et al.  Room-temperature near-ultraviolet electroluminescence from a linear silicon chain , 1997 .

[20]  M. Yokoyama,et al.  Photocurrent multiplication in organic pigment films , 1994 .

[21]  Stephen R. Forrest,et al.  Efficient, high-bandwidth organic multilayer photodetectors , 2000 .