A mature OLED testing system must establish a high‑fidelity mapping between electrical excitation and optical capture. This system mainly consists of the following modules:

Precision Source Measure Unit (SMU): A low‑noise, high‑resolution digital source meter is used to achieve sub‑microampere ultra‑low current injection and optical signal acquisition, precisely capturing the optoelectronic mutation at the turn‑on voltage.

High‑Performance Silicon Photodetection Unit: A silicon photodiode with ultra‑low dark current and high linearity response maintains a linear relationship between photocurrent and incident irradiance over a wide dynamic range.

High‑Precision Temperature Control System: Supports precise and stable control (±0.1°C) over a wide temperature range (–190°C to 600°C / RT to 1200°C).

Fully Sealed High‑Isolation Dark Box: Ensures that the signal‑to‑noise ratio under low‑current and low‑luminance conditions meets the requirements for academic publication.

Temperature is a key variable affecting the carrier mobility and exciton radiative/non‑radiative recombination rates inside an OLED. In academic research, a constant test temperature is a prerequisite for eliminating interference from extrinsic factors:

Closed‑loop thermodynamic environment: The system supports integration with a precision temperature control stage.

The core competitiveness of the system lies in its built‑in physical and mathematical models. For each derived parameter, we provide a clear physical traceability:

Lambertian correction and geometric factor: To account for different packaging structures and microcavity effects, the algorithm incorporates a light‑collection angle correction model, eliminating misinterpretation of characteristics due to large‑angle losses.

Spectral response correction: Since silicon photodiodes have different sensitivities to different wavelengths, we provide a table of responsivity values R(λ) corresponding to various wavelengths to perform gain calibration of the detector, ensuring accurate mapping between luminance and current density.

Rigor in EQE calculation: Based on calibrated photometric values, combined with the device’s emitting area and assumptions about its spatial distribution, the system provides a transparent calculation formula to help researchers trace back every physical component.

To date, GoGo Instruments has provided customized testing systems to numerous universities and research institutes, helping them publish high‑quality academic papers in top‑tier journals.

What we offer is not just a set of equipment, but a complete overall solution.