Overview
IEC TS 62607-5-3:2020 - "Nanomanufacturing – Key control characteristics – Part 5-3: Thin-film organic/nano electronic devices – Measurements of charge carrier concentration" specifies sample structures and measurement guidance for determining charge carrier concentration in organic and nano-scale thin films. The Technical Specification covers two primary measurement approaches: capacitance–voltage (C‑V) testing using metal/insulator/semiconductor (MIS) stacks and Hall‑effect testing using the van der Pauw configuration. It also provides criteria for selecting the appropriate technique and recommends data formats and case studies to support reproducible metrology.
Key topics and technical requirements
- Sample structures
- Design and fabrication of MIS structures (top- and bottom-contact configurations) suitable for reliable C‑V measurements.
- Thin-film specimens with van der Pauw geometry, including micro‑scale electrode gaps for high‑resistance organic semiconductors.
- Measurement methods
- Guidelines for C‑V measurements in organic/nano layers, noting sensitivity to interface contacts, insulator thickness, and hysteresis effects.
- Use of Hall‑effect measurements with van der Pauw configuration for highly crystalline organic materials; alternatives for low-mobility, high-resistance films.
- Critical criteria
- Formation of quasi‑ohmic contacts (e.g., contact doping) between electrode and semiconductor for accurate readings.
- Minimizing insulator thickness in MIS stacks to reduce hysteresis while retaining insulating performance.
- Consideration of semiconductor thickness, electrode contact conditions, and device architecture when interpreting carrier concentration.
- Supporting content
- Annex with case studies, stepwise procedures for C‑V and Hall measurements, examples showing influence of layer thickness and contacts.
- Recommended data formats (tables) for reporting measured carrier concentrations.
Applications and who should use it
IEC TS 62607-5-3 is intended for:
- Materials scientists and researchers characterizing organic semiconductors, nano-electronic thin films, OLED/OTFT materials and doped layers.
- Process and device engineers validating doping levels, contact engineering, and thin‑film fabrication in R&D and pilot production.
- Metrology and test laboratories performing electrical characterization and quality control of thin-film electronic devices.
- Manufacturers seeking standardized, reproducible procedures for reporting charge carrier concentration in nanomanufactured electronic components.
Practical uses include evaluating doping strategies, optimizing contact interfaces, selecting appropriate measurement techniques for a given mobility/resistivity range, and establishing traceable test methods for device development and quality assurance.
Related standards
- Part of the IEC TS 62607 series on Nanomanufacturing – Key control characteristics. Users should consult other parts of the series and IEC resources (Electropedia, IEC webstore) for complementary guidance on terminology and related measurement standards.