Driving vertical phase separation in a bulk-heterojunction by inserting a poly(3-hexylthiophene) layer for highly efficient organic solar cells

Journal Article · Mon Jan 10 00:00:00 EST 2011 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.3541648· OSTI ID:21518248

Oh, Jin Young; Jang, Woo Soon; Lee, Tae Il; Myoung, Jae-Min; Baik, Hong Koo ^[1]

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1. Department of Materials Science and Engineering, Yonsei University, Seoul 120-749 (Korea, Republic of)

A desirable vertical phase separation of a bulk-heterojunction was achieved by inserting a P3HT layer between the blend layer and the poly(3,4-ethylenedioxythiophene) poly(styrenesulfonate) (PEDOT:PSS) layer. According to the high (PEDOT:PSS) and low (P3HT) surface energies of substrate, it might be possible to modulate the vertical phase separation in the bulk-heterojunction. The result of vertical phase separation was determined using time-of-flight secondary-ion mass spectroscopy analysis. A controlled thickness of 50 nm for the inserted P3HT layer prevented undesirable light absorption and the power conversion efficiency of this condition was increased by 44% compared to that of a reference device.

• OSTI ID: 21518248
• Journal Information: Applied Physics Letters, Vol. 98, Issue 2; Other Information: DOI: 10.1063/1.3541648; (c) 2011 American Institute of Physics; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ABSORPTION
CONVERSION
EFFICIENCY
HETEROJUNCTIONS
ION MICROPROBE ANALYSIS
IONS
LAYERS
MASS SPECTRA
MASS SPECTROSCOPY
ORGANIC SOLAR CELLS
POLYMERS
SUBSTRATES
SURFACE ENERGY
THICKNESS
TIME-OF-FLIGHT METHOD
CHARGED PARTICLES
CHEMICAL ANALYSIS
DIMENSIONS
DIRECT ENERGY CONVERTERS
ENERGY
EQUIPMENT
FREE ENERGY
MICROANALYSIS
NONDESTRUCTIVE ANALYSIS
PHOTOELECTRIC CELLS
PHOTOVOLTAIC CELLS
PHYSICAL PROPERTIES
SEMICONDUCTOR JUNCTIONS
SOLAR CELLS
SOLAR EQUIPMENT
SORPTION
SPECTRA
SPECTROSCOPY
SURFACE PROPERTIES
THERMODYNAMIC PROPERTIES