Using Neutron Spin Echo Resolved Grazing Incidence Scattering to Investigate Organic Solar Cell Materials

Andrew J. Parnell; Adam Hobson; Robert M. Dalgliesh; Richard A. L. Jones; Alan D. F. Dunbar

doi:10.3791/51129

Uso de neutron spin echo resuelto grazing incidencia dispersión para investigar materiales orgáni...

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Using Neutron Spin Echo Resolved Grazing Incidence Scattering to Investigate Organic Solar Cell Materials

Uso de neutron spin echo resuelto grazing incidencia dispersión para investigar materiales orgánicos de células solares

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06:05 min

January 15, 2014

DOI: 10.3791/51129-v

Andrew J. Parnell¹, Adam Hobson², Robert M. Dalgliesh³, Richard A. L. Jones¹, Alan D. F. Dunbar²

¹Department of Physics and Astronomy,University of Sheffield, ²Department of Chemical and Biological Engineering,The University of Sheffield, ³ISIS Pulsed Neutron and Muon Source Science and Technology Facilities Council,Rutherford Appleton Laboratory

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Overview

This study demonstrates the use of spin echo resolved grazing incidence scattering (SERGIS) as a neutron scattering technique to investigate length scales in irregular thin film samples. The technique was applied to crystallites of [6,6]-phenyl-C61-butyric acid methyl ester, with results corroborated by optical and atomic force microscopy.

Key Study Components

Area of Science

Neutron scattering
Thin film analysis
Polymer solar cells

Background

Neutron scattering techniques are essential for probing material structures.
Irregular structures in thin films can impact device performance.
Optical and atomic force microscopy are conventional methods for structure analysis.
Understanding length scales is crucial for optimizing materials in solar cells.

Purpose of Study

To demonstrate SERGIS as a viable method for probing irregular structures.
To correlate neutron scattering results with conventional microscopy findings.
To enhance understanding of the structural properties of polymer solar cell materials.

Methods Used

Preparation of irregular thin film samples.
Application of SERGIS to measure length scales.
Use of optical microscopy for initial structure assessment.
Utilization of atomic force microscopy for confirmation of results.

Main Results

Length scales measured by SERGIS matched those obtained from microscopy.
Results confirmed the effectiveness of SERGIS in analyzing irregular structures.
Demonstrated the potential of neutron scattering in materials science.
Provided insights into the structural characteristics of polymer solar cell components.

Conclusions

SERGIS is a promising technique for probing complex material structures.
The study reinforces the importance of correlating different measurement techniques.
Findings contribute to the development of better-performing solar cell materials.

Frequently Asked Questions

What is SERGIS?

SERGIS stands for spin echo resolved grazing incidence scattering, a neutron scattering technique used to analyze material structures.

How does SERGIS compare to traditional microscopy?

SERGIS provides complementary information about length scales in materials that may not be visible through traditional microscopy methods.

What materials were studied in this research?

The study focused on crystallites of [6,6]-phenyl-C61-butyric acid methyl ester.

Why is understanding length scales important?

Length scales influence the performance and efficiency of materials, particularly in applications like solar cells.

What techniques were used to confirm the SERGIS results?

Optical and atomic force microscopy were used to validate the findings from the SERGIS measurements.

Se ha avanzado en la utilización de la dispersión de incidencia de pastoreo resuelta por eco de espín (SERGIS) como una técnica de dispersión de neutrones para sondear las escalas de longitud en muestras irregulares. Cristalitos de [6,6]-fenil-C61-butírico ácido éster metílico han sido sondeados utilizando la técnica SERGIS y los resultados confirmados por microscopía óptica y de fuerza atómica.

El objetivo general del siguiente experimento es demostrar que los neutrones espan, resuelven el eco y la dispersión de incidentes rasantes. Suris se puede utilizar para sondear las escalas de longitud presentes en muestras de película delgada irregulares, como la capa activa dentro de las células solares de polímero. Esto se logra preparando muestras adecuadas que tengan estructuras irregulares como segundo paso.

Las escalas de longitud de estas estructuras se miden utilizando técnicas convencionales de microscopía óptica y de fuerza atómica para confirmar la presencia de estructuras irregulares. A continuación, se toman mediciones de suris de neutrones utilizando las muestras preparadas. Se obtienen resultados que muestran que las escalas de longitud observadas en los experimentos de suris coinciden con los resultados de la microscopía convencional.

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