TECHNOLOGY FOCUS - ELECTRONICS - Preferred Properties: The ionization potentials of the organic p-type (electron donor) semiconductor pigment(s) and the ionization potential of the p-type (electron donor) conducting polymer(s) differ by less than 0.5 V. The organic p-type (electron donor) semiconductor pigment(s) exhibits high absorption for visible and near infrared radiation. The organic p-type (electron donor) semiconductor pigment(s) has particle sizes of less than 0.5 micron in length. The electron affinity of the organic n-type (electron donor) semiconductor pigment(s) and the electron affinity of the n-type (electron donor) conducting polymer(s) differ by less than 0.5 V, preferably less than 0.2 eV. The organic n-type (electron donor) semiconductor pigment(s) has particle sizes of less than 0.2 micron, preferably less than 0.1 micron in length. Preferred Components: The organic p-type (electron donor) semiconductor pigment(s) forms nanometer-sized crystals. The organic p-type (electron donor) semiconductor pigment(s) comprises 0.01-90 wt.%, based on the dry weight of the layer comprising the pigment. The photosensitive organic semiconductor composition further comprises solvent.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: The organic p-type (electron donor) semiconductor pigment consists of optionally substituted metal-free phthalocyanines, optionally substituted metallophthalocyanines, or porphyrins. It is a metallophthalocyanine.    TECHNOLOGY FOCUS - POLYMERS - Preferred Components: The conducting polymer(s) exhibits weak or no absorption of visible or near infrared light. It is a conjugated polymer or a non-conjugated conducting polymer. It is polythiophenes, paraphenylvinylenes, polyanilines, or polypyrolles. The organic semiconductor pigment(s) is an n-type (electron donor) organic semiconductor pigment and the conducting polymer(s) is an n-type (electron donor) electronically conducting polymeric binder. The conducting polymer(s) is a non-conjugated conducting polymer containing pendant arylamine groups.