Instrumentation

Processing and Screening

Glovebox System (C60.114.1)

3-chamber glovebox system from GS with nitrogen atmosphere funded by DFG:

• preparation box with spin coater, hot plates
• transfer box with direct access to two evaporators Univex 350G from Leybold:
  • "Audi" (thermal evaporation of organic semiconductors and metals)
  • "BMW" ("beamer"; e-beam and thermal evaporation of metals)
• characterisation box with
  • current-voltage measurements (SMU Keithley 236) with home-built multiplexer
  • external quantum efficiency (Monochromator Bentham TM300, Spectroradiometer System Bentham 200Series, SR DSP830 lock-in amplifier)
  • Korad power supply with LED
  • Wavelabs LS-2 solar simulator
  • scale

separate processing glovebox from M.Braun for perovskite processing

• spin coater (Laurell WS–400)
• programmable hot stage
• analytical balance

Chem Labs (C60.105.1 and C60.106)

• 2 wet benches with ultrasonic bath etc.
• spin coater (Laurell WS–400)
• vacuum oven
• oxygen plasma cleaner Diener Zepto
• transmission spectrometer (Cary 100 UV-Vis)
• PL spectrometer (Cary Eclipse)
• contact angle measurements (DataPhysics OCA)

Microscopy (C60.104)

• Laser Scanning (Fluorescence) Microscope Zeiss LSM 510

Characterisation

Intensity Modulated Photoluminescence Spectroscopy (C60.105)

• lock-in amplifier Zurich Instruments HF2LI (50 MHz)
• modulated Laser Diode (200 mW, 638 nm, 10 MHz)
• two large area Si-photodiodes
• two Femto DHPCA-100 transimpedance amplifiers

Sensitive External Quantum Efficiency and Electroluminescence Spectroscopy (C60.104)

• closed cycle optical cryostate (CryoVac Spectro) with load-lock for direct transport of samples from glovebox without oxygen exposure
• QTH lamp (100W LOT-QD)
• ND filter wheels, range OD 0.0 ... 9.0 (Thorlabs FW102C+FW212C)
• double monochromator (LOT-QD DK242)
• lock-in amplifier Zurich Instruments MFLI with MF-MD and MF-F5M options
• lock-in amplifier SRS830DSP
• SMU Keithley 2635A
• spectrograph (Princeton Instruments SpectraPro (f=500mm)) with Si and InGaAs CCD (PyLoN-IR) arrays for visible to near infrared range
• Nd:YAG cw-Laser 5W, 532 nm (Spectra-Physics Millenia Pro)
• Keithley Picoamperemeter

Spider: Cryo Probe Station (C60 104)

• cryo probe station Janis ST500 with load-lock for direct transport of samples from glovebox without oxygen exposure
• impedance analyser Zurich Instruments MF-IA with MF-MD and MF-F5M
• waveform generator Keysight 33600A and WaveRunner 6 Zi Oscilloscope (1 GHz)

Fast I⁴ (IV/IMPS/IMVS/IS) Setup (C60.104)

• impedance analyser Zurich Instruments MF-IA with MF-MD and MF-F5M options
• SMU Keithley 2634b dual-channel
• laser "Lasy": Omicron A350 diode laser with fast analog modulation (350 MHz)
• Linkam Cryostat
• double ND filter wheel (Standa)

Optical Spectroscopy Station „FeLiSiTy“ (C60.105)

• Edinburgh Instruments FLS 1000 with
  • excitation and emission double monochromators
  • 450 W Xenon lamp
  • white light laser with ≤ 350 ps pulses, pulse repetition rates from 10 kHz to 1 MHz
  • four diode lasers (375 nm, 405 nm, 510 nm, 785 nm)
  • PMT up to 980 nm
  • fast hybrid detector with range 220 – 870 nm, time resolution 40 ps
  • NIR photomultiplier in nitrogen-flow cooled housing, 500 - 1400 nm, time resolution 800 ps
  • 4-window cuvette holder with thermoelectric temperature control from -35 °C to +105 °C
  • integrating sphere
  • cryostat integrating sphere, 77 to 500 K
  • optical cryostat Oxford OptiStat CF, down to Helium temperature

Pulsed Laser

• laser “Death Star”: Quanta-Ray INDI from Spectra-Physics, 65 mJ/pulse @ 355 nm, 20 Hz repetition rate and optical parametric oscillator BasiScan from Spectra-Physics covering visible and nearinfrared emission wavelengths. For Transient Current Spectroscopy (C60.105)

Ultrafast Spectroscopy (C60.105)

• laser "Femto": fs-laser Pharos 20 W (1020 nm, 290 fs) from Light Conversion with variable repetition rate, optimised for 50 kHz with 400 µJ pulse energy, down to single shot
• 50/50 beam splitter with optical parametric amplifiers (Orpheus and Lyra from Light Conversion)
• pump: variable wavelength from 315 nm to 2600 nm
• probe: variable wavelength from 315 nm to 16000 nm
• Other lasers sources:
  • supercontinuum laser NKT EXR–15 (450 - 2400 nm, up to 80 MHz) with SELECTplus AOTF filter system (wavelength selection from 450 to 1400 nm)
  • laserdiode 465 nm Picoquant LDH-P-C–470 (up to 80 MHz)
• objectives:
  • Zeiss 63x LWD
  • Thorlabs TL10X-2P - 10X, 0.5 NA, 7.77 mm WD
  • Zeiss EC Epiplan/NEOFLUAR 100x 0.9 DIC
• integrating sphere with UV-VIS spectrograph
• PL streak camera Hamamatsu C10910-05 for detection from 200 nm to 950 nm
• Syncroscan unit to automatically synchronise with the Pharos Laser for experiments with high repetition rates
• single sweep unit for single shot measurements
• TCSPC detectors:
  • 2x MPD single photon avalanche detector (instrument response function of laser scan setup: 25 ps)
  • 2x APDs Excellitas SPCM-AQRH (10 ns, ~ 400 - 1060 nm)
  • Picoquant PMA hybrid 40 (120 ps, 300 - 720 nm)
• TCSPC module: Picoharp 300
• Keysight 33500B wavefrom generator for transient electroluminescence
• Optional:
  • microscope cryostat Janis ST500 (7 K to 300 K) with Attocube x-y-z piezo stage (with mm range) inside
  • delay line for probe laser for time delays from 1 ps to 1,7 ns fast PL detector unit
  • monochromator with infrared detector (DoroTek) from 2000 nm to 14000 nm
  • spectrograph with 2D InGaAs Infrared CCD (Hamamtasu G11608) from 500nm to 1700 nm
• This project is co-financed by the DFG and tax money on the basis of the budget resources approved by the members of the Landtag of Saxony

Transient Current Spectroscopy (C60.105)

• laser excitation by fs laser "Femto" (see above
• closed cycle optical cryostate (CryoVac Spectro) with load-lock for direct transport of samples from glovebox without oxygen exposure
• custom-made preamplifier
• ND filter wheels, range OD 0.0 ... 9.0
• voltage pulse generator Keysight 81160A
• transimpedance amplifier FEMTO DHPCA–100
• 12 bit digitizer GaGe CS121G2, 500 MHz, 1 GSa/s