Σταθμός Φωτοηλεκτροχημικών Μετρήσεων (PEC)

Σταθμός Φωτοηλεκτροχημικών Μετρήσεων (PEC) για τη μελέτη των φωτοηλεκτρικών ιδιοτήτων υλικών. Πραγματοποιεί μετρήσεις φωτορεύματος και Δυναμικού Ανοικτού Κυκλώματος (OCP) υπό ελεγχόμενο φωτισμό.

Κωδικός Προϊόντος PEC Category Φωτοηλεκτροχημεία Brand: Instytut Fotonowy

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Περιγραφή

Photoelectrochemical (PEC) Measurement Station

Photoelectrochemical (PEC) Measurement Station allows to apply various measurement techniques: chronoamperometry, voltammetry, cyclic voltammetry and the light intensity modulated photocurrent/photovoltage. Those techniques enable to examine the photoelectric dynamics of the sample. Samples may be investigated using two– or three-electrodes configuration.

⬛ Quantities measured by the instrument:

I-V characteristics of a sample under illumination,
Open Circuit Potential (OCP) as a function of light wavelength,
Photocurrent as a function of light intensity,
IPCE or EQE,
Surface Photovoltage (SPV),
Space Charge Region capacitance.

⬛ Measurement techniques:

Chronoamperometry,
Voltammetry,
Cyclic voltammetry,
Chopped illuminance and more.

Sample shielding extension

The PEC measurement station may be extended with the Electrochemical Shielding Box to screen the ambient light and electromagnetic fields.

Specifications

⬛ LED Changer

10 LED slots,
Default LED set: 365 nm, 385 nm, 405 nm, 450 nm, 520 nm, 590 nm, 630 nm, 740 nm, 840 nm, white (3000 K),
Custom LED selection available,
Typical electric power of LEDs: 3W,
Light intensity modulation: square, sinusoidal, triangle or ramp waveform with adjustable amplitude and bias light intensity,
Light modulation frequency range: 1 µHz ÷ 10 kHz,

⬛Potentiostat

Bias potential range: -5 V ÷ 5 V,
Current ranges: 10 nA, 100 nA, 1 µA, 10 µA, 100 µA, 1 mA, 10 mA,
Current resolution: from 1 pA to 100 nA (range dependent),

⬛Controller

Maximum sampling rate: 1 kSample/s,
Connection with PC: via USB 2.0,

⬛ Electrochemical cuvette

Adapted for transparent and opaque samples,
Sample may be illuminated through the electrolyte or through the rear optical window,
PTFE container for electrolyte,
Reference electrode: Ag/AgCl,
Counter electrode: Pt.