Equipment
Computational Resources
Aryabhata : High Performance Computing Cluster
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11 nodes
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308 Xeon E5-2680 processors
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Infiniband Connections
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2 TB Memory
Experimental Resources
Frequency domain thermoreflectance (FDTR)
Frequency domain thermoreflectance (FDTR) system measures thermal properties according to surface temperature change under periodic heat flux. The surface reflectance is assumed linear to temperature in a small range. Digitally modulated pump laser (488 nm) heats the sample, resulting in temperature oscillation, which will be detected through intensity change of reflected probe laser (520 nm CW). A lock-in amplifier measures the phase lag between pump and reflected probe laser.The phase lag over a range of modulation frequency is fitted to the theoretical model to extract properties like thermal conductivity, thermal boundary conductance, and heat capacity. Bulk or thin film samples are usually coated with a thin layer of metal as transducer, in order to increase measurement sensitivity.
Microsanj Thermo-reflectance Camera
The operation of Microsanj thermal imaging system is based on non-invasive optical thermo-reflectance technique. This technique utilizes the relative change in the surface reflectivity of thesample due to the change in its temperature. It can be used for ultra-fast measurement of temperature distribution of the electronic materials and devices which will help in thermal design, defects and failure analysis. The system has the capability for time-sensitive hot-spot detection and reliability analysis with 300 nm spatial resolution, 100 ns temporal resolution and thermal resolution of 0.5 °C. Due to its superior spatial and temporal resolution, the system can be very useful for the thermal analysis of increasingly smaller microelectronic and optoelectronic materials and devices. The system serves as a great tool for advanced semiconductor device research, design, and development.
Cascade Summit 11k
Cascade Summit 11k is an automated probe system. It allows us to access the full range of test instrument for wafers as large as 200mm in application such as RF/Microwave, device characterization, wafer level reliability, e-test, modeling, or yield enhancement etc. Measurement accuracy can be reached by minimizing AC and spectral noise with effective shielding capability. Manual 3-axis stage enables fast, accurate ‘hands on’ wafer positioning with ergonomic controls. The temperature of platform can go as high as 300 C to meet thermal needs as well as high temperature stability enhancement. It is also very easy to configure with choices of measurement performance, chuck size, thermal range and microscope options.
Keithely 4200 SCS
Keithely 4200 SCS is a semiconductor characterization system which provides I-V, pulsed I-V and C-V characterization of semiconductor devices and test structures. It contains basic configurations and capabilities of the Source-Measure Units (SMUs), preamps, pulse generator card, Digital Storage Oscilloscope, and Capacitance-Voltage Units (CVUs) that are connected to Devices Under Test (DUTs). Tests are easily and quickly configured and executed from multiple software such as the Keithley Interactive Test Environment (KITE), KXCI, KCON, KPulse etc. Advanced digital sweep parameter analyzer combines speed and accuracy for deep sub-micron characterization. Multiple cable plans are provided for connection between 4200 SCS and Summit 11k to ensure high speed and high accuracy tests of our FETs as well as other nano-electronic device as needed.
Clean Room at Georgia Tech
Device fabrication and characterization are performed at Georgia Tech Institute for Electronics and Nanotechnology. This research facility includes:
E-beam Nanolightography, Nanoimprinting, Atomic layer Deposition, Plasma Enhanced Chemical Vapor Deposition, PVD RF Sputterer, Electron Beam Evaporator, Filament Evaporator, ICP and Plasma Reactive Ion Etch Chambers, Tristar Nitride Furnaces, Wet and Dry oxidation, Scanning Electron Microscope, Auto-load and Manual Spin Coater, Spin Develop Station, Mask Aligner/UV Exposure Tool, Automated Dicing Saw, Polishing and Lapping Stations, Wire Bonders, Dark Room Facility for Mask Generation, RF & DC Magnetron Sputtering Systems. Metrology tools include AFM, KLA tencor Profilometer, Wollam Ellipsometer, Nanospec Refractometer.