產品介紹∣量子效率測量系統

描述

量子效率測量系統是一套完整的太陽能電池光譜反應研究實驗裝置。樣品由單色儀產生的單色光束照射，入口處有兩種光源：氙燈和鹵素燈。兩種光源的波長範圍涵蓋紫外光、可見光和紅外光。儀器具有背景光( BIAS Light ) 延伸功能，可利用額外的氙燈與空氣質量濾波器所產生的標準化 AM1.5G 白光激發樣品。被檢測的電池放置在電動真空 XY 工作平台上，並可手動進行 Z 移動。測量是在隔絕環境光線和外部電磁場的室內進行。入射光強度由雙頻 Si/InGaAs 光電二極體監控。所有系統組件都是全自動化，透過軟體控制。

儀器測量的參數：

I-V 特性
照明下的開路電位 (OCP)
光譜反射系數 (R)
光譜透射係數 (T)

特性：

外部量子效率 (EQE 或 IPCE)
內部量子效率 (IQE 或 APCE)
短路電流密度 (Jsc)
填充因子

QE 測量工作站模組系統包括：樣品室內建光電二極體的電動多軸真空工作台積分球單色儀具有兩個入射狹縫，可在光源之間自動切換單色儀的第一個入口處的氙氣燈單色儀的第二個入口處的鹵素燈鎖相測量訊號處理氙氣燈 + AM1.5G 濾光片 (背景光( BIAS Light ) 延伸功能)。
樣品室內部
光電流量測/反射通量量測/內建光電二極體用於透射通量量測

儀器性可根據某些要求進行客製化……….

一般規格

總波長範圍：200 ÷ 1650 nm
樣品上可調整的白光光束強度：0.01 ÷ 0.1 W/cm²
照明均勻度：10%

氙氣燈

150 W 氙氣燈
水冷系統
低電磁輻射點火器
穩定模式：
- 電流穩定（失真< 1%）
- 電力穩定
- 光強度穩定（在實驗過程中提供恆定樣品照明的獨特解決方案）
樣品上的最大輻射強度：35 mW/cm2

鹵素燈

鹵素燈泡功率：150 W
反射器類型：橢圓形
空氣冷卻系統

單色儀

轉盤上有三個光柵，每個光柵針對不同波長範圍進行最佳化
根據波長選擇自動切換光柵
透過軟體控制的電動輸出與輸入狹縫
透過軟體切換不同光源的兩個輸入狭縫
入口與輸出光柵開啟範圍： 0 ÷ 5 mm
電動內部快門，可完全切斷光束
最大光譜解析度：最大光譜解析度：0.1 nm（取決於輸入與輸出狭縫寬度）
輸出端斬波器

濾波片切換

放置在樣品室入口處
最多 6 個濾光片
預設提供兩個邊緣 (長通) 濾光片：400 nm 和 600 nm

偵測器

雙波段 Si/InGaAs 光電二極體用於監測入射光強度、穿過樣品的通量和樣品反射的通量

鎖相

偏壓電位範圍：-5 V ÷ 5 V
電流範圍 1 µA、10 µA、100 µA、1 mA、10 mA、100 mA
電流解析度：1 pA 至 100 nA (依範圍而定)
最大取樣率： 1 kSample/s
與電腦連接：透過 USB 2.0
同時處理兩個光電二極體輸入 (參考光電二極體和反射光電二極體/透射光電二極體)
直流與交流量測模式
輸入增益：x1、x2、x4、x8、x12
積分時間：1 ms ÷ 10 s

電動多軸真空工作台

最大樣品尺寸： 20 x 20 cm
手動放置於樣品任何一點的接觸電極
金塗層
Z 軸的移動範圍：12 mm (手動)
移動精確度：0.01 mm
內建偵測器，可偵測透射光
光電流量測用的可調式接觸針腳、
內建真空泵，可保持樣品在穩定的位置

The Quantum Efficiency Measurement Station is a complete experimental setup for solar cells spectral response investigation. The sample is illuminated with a monochromatic beam produced by the Monochromator with two types of light sources at the entrance: Xenon Lamp and Halogen Lamp. Both lamps provides wavelengths range that covers UV, VIS and IR light. Instrument with the BIAS Light extension enables to excite the sample with a normalized white AM1.5G light from an additional Xenon Lamp combined with the Air Mass Filter. The examined cell is placed on a motorized vacuum XY Table, with a manual Z shift. Measurements are performed in a chamber that screens the setup from ambient light and external EM fields. The incident light intensity, is monitored with a Dual Band Si/InGaAs Photodiode. All the system components are fully automated, controlled via software.

Quantities measured by the instrument:

I-V characteristics,
Open Circuit Potential (OCP) under illumination,
Spectral reflection coefficient (R),
Spectral transmission coefficient (T),

Characteristics:

External quantum efficiency (EQE or IPCE),
Internal quantum efficiency (IQE or APCE),
Short-circuit current density (Jsc),
Fill Factor.

QE Measurement Station modules The system consists of: Sample Chamber, Motorized Multi-Axis Vacuum Table with a built-in photodiode, Integrating Sphere, Monochromator with two entrance slits for automatic switching between light sources, Xenon Lamp at the first entrance of the Monochomator, Halogen Lamp at the second entrance of the Monochromator, Lockin for measured signals processing, Xenon Lamp + AM1.5G Filter (BIAS Light extension)
Sample Chamber interior
Photocurrent measurement/ Reflected flux measurement/ Built-in photodiode for Transmitted flux measurement

Specifications
Instrument performance may be tailored to the certain requirements..

General

Total wavelengths range: 200 ÷ 1650 nm,
Adjustable white light beam intensity on the sample: 0.01 ÷ 0.1 W/cm²,
Illumination homogeneity: 10%,

Xenon Lamp

150 W xenon burner,
Water cooling system,
Low EM emission igniter,
Stabilization modes:
- electric current stabilization (distortions < 1%),
- electric power stabilization,
- light intensity stabilization (unique solution to provide constant sample illumination during the experiment),
Maximum radiation intensity on the sample: 35 mW/cm2

Halogen Lamp

Electrical power of halogen bulb: 150 W,
Reflector type: elliptic,
Air cooling system,

Monochromator

Three gratings on the turret, each optimized for different wavelengths range,
Automated grating switching depending on the wavelength selection,
Motorized output and input slits, controlled via software,
Two input slits for different light sources, switched via software,
Entrance and output slit opening range: 0 ÷ 5 mm,
Motorized internal shutter, that provides full cut off of the light beam,
Maximal spectral resolution: 0.1 nm (depends on the input and output slits width),
Chopper at the output,

Filter Changer

Placed at the Sample Chamber entrance,
Up to 6 filters,
Two edge (long pass) filters provided by default: 400 nm and 600 nm,

Detectors

Dual Band Si/InGaAs Photodiodes are used to monitor the incident light intensity, the flux transmitted through the sample and the flux reflected by the sample.

Lockin

Bias potential range: -5 V ÷ 5 V,
Current ranges: 1 µA, 10 µA, 100 µA, 1 mA, 10 mA, 100 mA,
Current resolution: from 1 pA to 100 nA (range dependent),
Maximum sampling rate: 1 kSample/s,
Connection with PC: via USB 2.0,
Two photodiodes inputs handled simultaneously (Reference Photodiode and Reflectance Photodiode/Transmittance Photodiode),
DC and AC measurement mode,
Input gain: x1, x2, x4, x8, x12,
Integration time: 1 ms ÷ 10 s.

Motorized Multi-Axis Vacuum Table

Maximum sample dimensions: 20 x 20 cm,
Contact electrodes placed manually at any point of the sample,
Golden coating,
Movement range for Z axis: 12 mm (manual),
Movement precision: 0.01 mm,
Built-in detector for transmitted light detection,
Adjustable contact pins for photocurrent measurements,
Vacuum pump integrated to keep the sample in stable position.