Method of fabricating an organic photosensitive optoelectronic device with an exciton blocking layer
Patent 6844025 Issued on January 18, 2005. Estimated Expiration Date: January 14, 2024. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
427/74, Photoelectric438/82, Having organic semiconductor component136/263, Organic active material containing257/21, Light responsive structure428/690, Fluroescent, phosphorescent, or luminescent layer313/506, Plural layers250/214.1, Special photocell136/259, With concentrator, housing, cooling means, or encapsulated428/411.1, COMPOSITE (NONSTRUCTURAL LAMINATE)428/212Including components having same physical characteristic in differing degree
Organic photosensitive optoelectronic devices (“OPODs”) are disclosed which include an exciton blocking layer to enhance device efficiency. Single heterostructure, stacked and wave-guide type embodiments are disclosed. Photodetector OPODs having multilayer structures and an exciton blocking layer are also disclosed. Guidelines for selection of exciton blocking layers are provided.
M. Granströ, et al., “Laminated fabrication of polymeric photovoltaic diodes”, Nature, vol. 395, pp 257-260 (Sep. 17, 1998).
G. Yu, et al., “Polymer Photovoltaic Cells: Enhanced efficiencies via a network of internal donor-acceptor heterojunctions”, Science, vol. 270, pp. 1789-1791 (Dec. 15, 1995).
U. Bach, et al., Solid-state dye-sensitived mesopourous TiO2 solar cells with high photon-to-electron conversion efficiencies, Nature, vol. 395, pp 583-585 (Oct. 8, 1998).
A. Shah, et al., “Photovoltaic Technology: The case for thin-film solar cells”, Science, vol. 285, pp 692-698 (Jul. 30, 1999).
C. Arbour, et al., “Surface Chemistries and Photoelectrochemistries of Thin Films Molecular Semiconductor Materials”, Mol. Cryst. Liq. Cryst, vol. 183, 307-320 (1990), no month.
Y. Hirose, et al., “Chemistry and electronic properties of metal-organic semiconductor interfaces: A1, Ti, In, Sn, Ag, and Au on PTCDA”, Phys. Rev. B, vol. 54, No. 19, pp 13 748-13 758 ( Nov. 15, 1996).
D.F. O'Brien, et al., “Improved energy transfer in electrophosphorescent devices”, Applied Physics Letters, vol. 74, No. 3, pp. 442-444, (Jan. 18, 1999).
S.E. Burns, et al., “Measurements of Optical electric field intensities in microcavities using thin emissive polymer films”, Adv. Mater., vol. 9, No. 5, pp 395-397 (1997), no month.
P.E. Burrows, et al., “Relationship Between Electroluminescence and Current Transport in organic heterojunction light-emitting devices”, J. Appl. Phys., vol. 79, No. 10, pp. 7991-8006 (May 15, 1996).
S.R. Forrest, “Ultrathin Organic Films Grown by Organic Molecular Beam Deposition and Related Techniques”, Chem. Rev., vol. 97, No. 6, 1793-1896 (Sep./Oct. 1997).
J.J. M. Halls, et al., Exciton diffusion and dissociation in a poly(p-phenylenevinylene)/C60 heterojunction photovoltaic cell, Appl. Phys. Lett., 68(22), pp 3120-3122 (May 27, 1996).
L.A.A. Pettersson, et al., “Modeling photocurrent action spectra of photovoltaic devices based on organic thin films”, J. Appl. Phys., vol. 86, No. 1, pp 487-496 (Jul. 1, 1999).
X. Deng, et al., “Improved μc-Si p-Layer and a-Si i-Layer materials using VHF plasma deposition”, 26th IEEE PVSC Conf. Record, p. 591-594, IEEE Press, NY (Sep. 30-Oct. 3, 1997).
S.R. Wenham, et al., Applied Photovoltaics, Appendix B, Bridge Printery, Sydney (1994), no month.