Glancing Angle Deposition of Copper Iodide Nanocrystals for Efficient Organic Photovoltaics

We report a simple method to achieve efficient nanostructured organic photovoltaics via patterning copper iodide (CuI) nanocrystals on indium tin oxide by glancing angle deposition. The strong interfacial interaction between zinc phthalocyanine (ZnPc) and CuI leads to the formation of nanopillar arr...

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Veröffentlicht in:	Nano letters 2012-08, Vol.12 (8), p.4146-4152
Hauptverfasser:	Zhou, Ying, Taima, Tetsuya, Miyadera, Tetsuhiko, Yamanari, Toshihiro, Kitamura, Michinori, Nakatsu, Kazuhiro, Yoshida, Yuji
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences Buckminsterfullerene Condensed matter: structure, mechanical and thermal properties Copper COPPER IODIDE Cross-disciplinary physics: materials science rheology CRYSTAL STRUCTURE DEPOSITION Electronics Exact sciences and technology Fullerenes Iodides Low-dimensional structures (superlattices, quantum well structures, multilayers): structure, and nonelectronic properties Materials science Methods of nanofabrication MICROSTRUCTURES Molecular electronics, nanoelectronics Nanocrystals Nanopowders Nanoscale materials and structures: fabrication and characterization Nanoscale pattern formation Nanostructure ORGANIC COMPOUNDS Physics Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices Solar cells Surfaces and interfaces thin films and whiskers (structure and nonelectronic properties) Zinc
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Beschreibung
Zusammenfassung:	We report a simple method to achieve efficient nanostructured organic photovoltaics via patterning copper iodide (CuI) nanocrystals on indium tin oxide by glancing angle deposition. The strong interfacial interaction between zinc phthalocyanine (ZnPc) and CuI leads to the formation of nanopillar arrays with lying-down molecular order, which greatly improve light absorption and surface roughness for exciton dissociation. Optimized ZnPc/C60 bilayer cell has a power conversion efficiency of 4.0 ± 0.1%, which is about 3-fold larger than that of conventional planar cell.
ISSN:	1530-6984 1530-6992
DOI:	10.1021/nl301709x