Oriel Instruments' Quantum Efficiency Systems empower researchers to measure Internal Quantum Efficiency (IQE) and External Quantum Efficiency (EQE), also known as Incident Photon to Charge Carrier Efficiency (IPCE), for any photovoltaic device. Employing industry leading, durable components for optical performance, these systems are preconfigured, assembled, and calibrated at the factory. The products are a turn-key solution which includes all necessary components with integrated light source, monochromator, detectors, electronics, software, and even the computer. A variety of accessory modules are available to provide positive sample positioning, temperature control, and electrical probing capabilities.