Facilities

 

The total lab space for Huang’s group at this time is approximately 1,500 square feet. We have already established a world-class facility for organic/nano electronic material synthesis, material characterization, device fabrication, and device characterization.

 

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A double length MBraun glove box is available to do the spin-coating in the N2 atmosphere. The glove box has also the quartz windows and electric feedthroughs which allow I-V measurement of the solar cell devices inside the glove box. A Newport 150 W solar simulator and computer controlled Keithley 2400 for solar cell efficiency measurement is available.

 

One glovebox with a SCS G-8 spin-coater intergrated.

 

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One MBraun four-source thermal evaporator in the glovebox which connected to the spin-coater glovebox. Co-evaporation can be done in this evaporator.

 


A Vigor glovebox with SCS 6808P spin-coater inside

 

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N2 filled glovebox with KW 4A spin-coater for film deposition, several hotplates/stirrers for annealing.

 

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Material/substrate preparing equipment includes two hoods for chemical synthesis, Jelight UV-Ozone for substrate surface treatment, KW 4A spin-coater for film deposition, several hotplates/stirrers and several ovens for annealing.

The vertical laminar flow workstation provides clean laminar flow air for process protection by using a two stage filtration process. Room air is first cleaned with an electrostatically charged prefilter and then further cleaned with a HEPA filter.

 

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A Newport optical table for external quantum efficiency (IPCE) and Photoluminescence spectroscopy measurements.

 


A vacuum system with four sources thermal evaporator

 

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One cookie thermal evaporate is devoted for organic thin film deposition.

 

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A solar simulator, Oriel Instruments, Model 81160-1000, calibrated to AM 1.5 is available for solar cell current-voltage measurements.  This simulator is coupled with a Keithley 2400 source/meter, a programmed Dell computer and homemade black box with inputs and outputs for which diodes can be measured in the dark or in the light.

 

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A brand new external quantum efficiency measurement setup (IPCE) from Newport with the capability to apply bias to the device during the measurement.

 

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E4980A Precision LCR Meter, measurement range can be 20 Hz to 2 MHz and have 0.05% basic accuracy with superior measurement repeatability at low and high impedance.

 

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A LakeShore 2-inch wafer probe station with six probes. Temperature range is from 4.2 K to 475 K. A SCS 4200 semiconductor parameter analyzer is connected to measure diode, transistor and bistable memory with minimal current of fA, and with option of pulse measurement.

 


Stanford Research Systems include: Model SR830 DSP Lock-in Amplifier, Model SR560 Low-Noise Preamplifier and Model SR540 Chopper Controller with the capability to measure very weak voltage signal and noise.

 

 

A Ferroelectric Tester

 

An Agilent oscilloscope

 


A Evolution 201 UV-Visible Spectrophotometer from Thermo Scientific.

 


iHR320 Photoluminescence Spectroscopy with silicon detector and InGaAs detector.

 

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One Upright fluorescence microscope (Olympus AX70) with digital camera can work in reflection, transmit mode, with polarizer and multiple bandpass filters;

 

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Two hoods for chemical synthesis

 

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A magnetic field generator with magnetometer (from Prof. Yongfeng Lu), up to 2.6 Tesla on the uniform area of 2 square inches.

 

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A homemade probe station connected to one Keithley 2400 and one Keithley 2601 and controlled by a computer, for the micro-size transistors measurement.

 

As a member, we can use the facility in the following center at a reduced rate:
Nebraska Center for Materials and Nanoscience (NCMN),
 http://www.unl.edu/ncmn/

Biomechanics, Biomaterials and Biomedicine (BM3) Instrumentation Facility,
http://engineering.unl.edu/research/bm3/

Materials Research Science and Engineering Center (MRSEC) http://www.mrsec.unl.edu/facilities/index.shtml