PD-RS Photoelectric Device Response Measurement and Analysis System
The PD-RS is engineered for the optoelectronic characterization of photodetectors and photonic devices. A monochromatic single-wavelength laser source, driven by continuous-pulse or periodic intensity modulation, illuminates the device under test and excites photocurrent or photovoltage signals that the system captures for both time-domain and frequency-domain analysis.
Together these measurements give a complete picture of photoelectric conversion performance: frequency response from 10 Hz to 30 MHz, rise and fall time, linear dynamic range spanning up to nine orders of magnitude, and transient photocurrent and transient photovoltage behavior.
The laser source achieves rise and fall times below five nanoseconds, so the instrument can resolve the fastest response limits of a device and support meaningful TPC and TPV studies of carrier transport and recombination in thin-film structures.
Automated software sweeps the modulation frequency, plots the response curve, and extracts the minus three decibel cutoff point, the standard marker of device speed. Linear dynamic range testing maps photocurrent against incident light intensity across a 120 decibel window and derives the responsivity in milliamps per watt, a parameter widely used to judge photodetector quality.
Four selectable laser modules are available: RS-405 at 405 nm, RS-520 at 520 nm, RS-633 at 633 nm, and RS-940 at 940 nm. The platform is applicable to Final Test stage measurement in semiconductor production.
By closely correlating carrier transport, recombination, and dynamic behavior with intrinsic material properties and device architecture, the PD-RS supplies dependable data for device evaluation, performance optimization, and the development of new photoelectric materials.
PD-RS 光電元件響應測量與分析儀
PD-RS 專為光電元件(Photodetector)及各類光電器件的光電轉換特性分析而設計。系統以單色(單波長)雷射光源為核心,搭配連續脈衝或週期性光強調制照射待測元件,激發其產生光生電流(Photocurrent)或光生電壓(Photovoltage)訊號,並同步進行時域(Time Domain)與頻域(Frequency Domain)的量測與分析。
這些量測共同構成完整的光電轉換能力評估:頻率響應涵蓋 10 Hz 至 30 MHz、Rise Time / Fall Time、光強線性度(Linear Dynamic Range)最高可達 9 個量級,以及瞬態光電流(TPC)與瞬態光電壓(TPV)的動態行為。
系統雷射光源具備高速調變能力,爬升與下降時間低於 5 ns,因此能解析元件最快的時間響應極限,並支援薄膜光電元件中載子傳輸與復合行為的 TPC / TPV 研究。
軟體可自動調製輸出光束的調變頻率、繪製頻率響應圖,並擷取 −3 dB 截止頻率——當調變頻率上升至裝置響應跟不上光源開關變化、響應光電流隨之下降至 −3 dB 強度時,該頻率即作為標記元件速度的性能指標。光強線性度測試則在 120 dB 動態範圍內描繪光電流與入射光強度的對應關係,並換算出響應度(mA/W),為業界廣泛用於表徵光電元件優劣的參數。
系統提供四種可選雷射模組:RS-405(405 nm)、RS-520(520 nm)、RS-633(633 nm)、RS-940(940 nm)。平台可應用於半導體製程中的 FT(Final Test)測試階段。
透過將載子傳輸、復合及動力學行為與材料本質特性、器件結構緊密關聯,PD-RS 為光電元件的特性評估、性能優化及新材料開發提供可靠的量測依據。