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    Photoluminescence (PL):

    Photoluminescence (PL)

    Photoluminescence (PL) is an optical spectroscopy method that measures the light emitted by a material after excitation by a laser or UV source. It provides detailed information about band gap energies, defect states, recombination processes, and crystalline quality. Commonly applied in the characterization of semiconductors, nanostructures, and optoelectronic materials, PL offers high sensitivity and is a valuable tool in both research and industrial quality assessment.
    We provide advanced Photoluminescence (PL) services, including steady state fluorometers and lifetime TCPSC. Our techniques offer valuable insights into the optical and electronic properties of materials.
    • Steady state fluorometers
    • Lifetime TCPSC

    (a)Steady state fluorometers

    Steady-State Fluorescence Spectroscopy investigates the long-term average fluorescence of a sample when irradiated with UV, visible, or near-IR light. Our services provide critical insights into the optical properties of materials, supporting material characterization and quality control.

    Fluorolog-QM

    (Modular Research Fluorometer for Lifetime and Steady State Measurements)

    The HORIBA Fluorolog-QM™ is a high-performance, modular spectrofluorometer designed for advanced research. As the latest generation of the trusted Fluorolog series, it offers exceptional sensitivity, versatility, and precision with its all-reflective optics and customizable components.
    Ideal for steady-state and time-resolved fluorescence studies, the Fluorolog-QM supports a wide range of luminescence experiments including TCSPC, PLQY, and NIR. Its modular design allows users to add accessories anytime as research needs grow, making it a flexible and future-ready solution for any lab.

    Specifications:

    • Signal-to-Noise Ratio: Greater than 35,000:1 (Full Scale Deviation)
    • Data Acquisition Speed: From 1 million points per second to 1 point every 1000 seconds
    • Inputs & Outputs:
      Inputs: 4 photon counting (TTL), 4 analog, 1 analog reference, 2 TTL
      Outputs: 2 analog, 2 TTL
    • Emission Wavelength Range: 185 nm to 900 nm (extendable up to 5500 nm)
    • Light Source: 75 W xenon arc lamp (eco-friendly); optional upgrade to 450 W
    • Monochromators: High-precision Czerny-Turner design with computer-controlled slits
    • Gratings:
      Excitation: 1200 lines/mm, 300 nm blaze (2 optional gratings available)
      Emission: 1200 lines/mm, 400 nm blaze (2 optional gratings available)
    • Wavelength Accuracy: ±0.3 nm
    • Minimum Step Size: 0.01 nm (depends on grating)
    • Detector: Cooled photomultiplier tube (PMT) at -20°C (R928P standard)
      Low dark count: ≤10 counts/sec
      High linear count rate: up to 10 million counts/sec
    • Detection Modes: Photon counting, analog (fast/medium/slow), single-shot, TCSPC
    • Lifetime Measurement Range: From 5 picoseconds to several seconds (with time-resolved add-ons)
    • Software: Controlled via FelixFL spectroscopy software on PC

    (b)Fluorescence Lifetimes with TCSPC

    Lifetime Fluorescence Spectroscopy (also known as Time-Resolved Fluorescence or TCSPC) studies how fluorescence changes over time after a sample is excited with UV, visible, or near-IR light. This technique measures how long a material stays in its excited state, with decay times ranging from picoseconds to milliseconds, providing deep insights into molecular behavior and material properties.

    Delta Pro

    TCSPC Lifetime Fluorometer

    The DeltaPro is a compact and affordable system that simplifies Time-Correlated Single Photon Counting (TCSPC) for fluorescence lifetime measurements. It can measure lifetimes from picoseconds to 1 second using advanced DeltaHub timing electronics
    With interchangeable light sources like NanoLEDs, DeltaDiodes, and SpectraLEDs, the DeltaPro covers a wide range of wavelengths (250 nm to near-IR) and lifetime ranges—from picoseconds to seconds. The modular design allows easy upgrades for automation and expanded capabilities.

    Specifications:

    • Fast Measurements: As quick as 1 millisecond
    • Time Range: Measures lifetimes from 10 nanoseconds to 11 seconds
    • Light Sources: Works with NanoLED, DeltaDiode, and SpectraLED
    • Repetition Rates: Up to 100 MHz depending on light source
    • Detector Range: Standard 250–650 nm; optional up to 900 nm
    • Compact Size: 75 × 45 × 25 cm
    • PC Connection: USB 2.0 (Windows XP/7 required)
    • Modular Design: Uses filters and optional monochromators for wavelength selection
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