FETs Dilute inic Electroi Hall effect measurement system available tronics OTFTs, Pentacene, Chalcogenides, LEDs Transparent Conduct onductors InR InSb, InAs, GaAs, GaN, GaP, GaSb, AIN (aluminum nitri HBTs (heteraj unction bipolar transistors) ll-VI Semiconductors CdS, Cd Jed devices (SOI), SiC, doped diamond SiGe based devices: HI ; Organic and c Solar Cells OPVs, a:Si, CdTe, CdlnGaSe (Cl( nt Conducting Oxides InSnO (ITO), ZnO, GaZnO, InGaZnO (IGi uminum nitride) based devices, HEMTs (high electron mob conductors CdS, CdSe, ZnS, ZnSe, ZnTe, HgCdTe Elemer AC/DC Hall Effect Measurement System developed with ®TOYO Corporation

Model 8404 AC/DC Hall Effect Measurement System Work with confidence knowing that the fully integrated Model 8404 HMS is backed and supported by industry leading experts in materials characterization systems 3

4 Model 8404 AC/DC Hall Effect Measurement System Fields of Study and Research The Model 8404 HMS combines the best of both DC and AC field Hall measurement methodologies to facilitate the broadest range of research applications. Optional variable temperature modules and measurement platforms extend the utility of your HMS by allowing you to configure your system to meet your specific needs. Photovoltaic and thermoelectric applications Research Development and Engineering Command Photovoltaic (solar cell) and thermoelectric materials are often characterized by low mobilities. This characteristic...

Model 8404 AC/DC Hall Effect Measurement System Materials Solar cells OPVs, a:Si, µc-Si, CdTe, CuInGaSe (CIGS) Organic Electronics OTFTs, Pentacene, Chalcogenides, OLEDs Transparent Conducting Oxides InSnO (ITO), ZnO, GaZnO, InGaZnO (IGZO) 5 Direct and Derived Measurements as a Function of Field and Temperature Hall voltage Resistivity Hall coeffient Carrier type/concentration/density Hall mobility Magnetotransport III-V Semiconductors InP, InSb, InAs, GaN, GaP, GaSb, AIN based devices, high electron mobility transistors (HEMTs) and heterojunction bipolar transistors II-VI Semiconductors CdS,...

6 Model 8404 AC/DC Hall Effect Measurement System Integrated Software — define samples and create measurement profiles from the Windows® menu-driven interface Ergonomic Workstation — in addition to housing all of the integrated electronics, the workstation offers a convenient tabletop and drawer to store sample cards and other convenience items AC Field Hall Measurement Option — measure Hall mobilities down to 0.001 cm2/V s—lower than ever possible using traditional DC field Hall measurement techniques High Resistance Option— widens range to 200 GΩ Precision design details deliver superior performance...

Model 8404 AC/DC Hall Effect Measurement System 7 Easy Setup — for ease of sample module exchange, modules slide forward out of the magnet gap Storage — while not in use, conveniently and safely store sample modules and inserts within close reach Settable Magnet Gap — guarantees precise gap spacing, ensuring repeatability and reproducibility Future Expansion — the robust platform allows you to add new features as your material measurement needs change Temperature-dependent Measurement options — measure samples from 15 K to 1273 K with a closed cycle refrigerator and high temperature oven, or...

8 Model 8404 AC/DC Hall Effect Measurement System System Application Software The fully integrated HMS software is Windows® color graphic menu-driven using a Microsoft® Outlook® interface for system operation, data acquisition and analysis. The familiar look and feel of the menu structure and navigation makes the platform easy to use. The software controls magnetic field, sample temperature, and sample excitation during measurements while delivering a comprehensive collection of measurement capabilities. The sample module ID feature automatically recognizes attached hardware and configures the...

9 Model 8404 AC/DC Hall Effect Measurement System Example of a DC measurement results screen Example of an ohmic check Explanation of Hall Effect The characterization of the electronic transport properties of electronic materials is a very important activity. The bulk material characteristics of interest are resistivity, carrier density, and mobility. These properties are derived from film sheet resistivity, and Hall voltage. There are many methods for measuring sample sheet resistivity; most Hall measurement systems use either the van der Pauw or the Hall bar method. The Hall bar method uses...

10 Model 8404 AC/DC Hall Effect Measurement System Select system options to fit your applications A variety of measurement options are available to configure your system for best performance with your samples and their characteristic properties. Parameters to consider when selecting your configuration: b Mobility Range Mobility is one of the most important and commonly derived electronic transport properties measured in an HMS, as it is often directly related to the material performance in an electronic device. The type of magnet field, whether DC or AC, along with the integration of precision...

Model 8404 AC/DC Hall Effect Measurement System 11 d Magnet Configuration The magnet is one of the key components of any HMS. It determines, in part, what kind of measurements you can perform. The Model 8404 comes equipped with a 100 mm (4 in) electromagnet capable of taking variable DC field Hall measurements to 1.67 T and AC field measurements to 1.18 T. The standard configuration is optimized to maximize field strength and ensure uniformity of the field over your sample area. Optional pole cap diameters are available to configure the field and uniformity to your specific requirements. The...

^■9 Model 8404 AC/DC Hall Effect Measurement System www.lakeshore.com Lake Shore Cryotronics, Inc. (614)891-2244 fax:(614)818-1600 e-mail: [email protected]

13 Model 8404 AC/DC Hall Effect Measurement System Model 8404 Hardware T E M P E R AT U R E O P T I O N S Standard room temperature Model 84015 77 K LN2 body option Standard insert Standard with 8404 Used together Standard body Standard with 8404 Optical access body 84006, requires 84060 Sample rotation Model 84016 CCR option Model 84017 oven option 84016-O, requires 84060 84010 Sample card kit Five 10 mm solder cards Sample card kit Five 10 mm solder cards with PT sensors 10 mm prober pin sample card with PT sensor 50 mm prober pin sample card with PT sensor Temperature monitoring 840930 840931...