IQE-SCAN 光谱量子效率和反射率测试仪

量子效率测试仪

此工具专为IQE的自动IQE分析而设计

晶体硅太阳能电池。一些功能是：

• 太阳能电池采用可变光照明，均匀地覆盖20 x 20 mm的区域，

或者聚焦点约为。 1 x 3mm²。

• 通过连续移动4平方厘米的照明区域进行全面的EQE和反射率测量。
• 来自单​​色器的280-1600 nm之间的单色光（2个光栅，狭缝宽度和有序滤光片自动改变）。通常使用的带宽为8 nm FWHM，波长精度为1 nm。
• 多达1.2个太阳的白光偏置仅限于单色照明区域。
• 准偏差自动确定准绝对EQE测量的正确偏置光强度

只需要一次波长扫描。该程序也可用于检查太阳能电池的线性。

• 反射率是在带有BaSO4涂层的积分球的2 x 2cm²的8°倾斜光束下测量的。
• 在不同条件下进行一系列测量的批量模式。
• 太阳能电池保持在温度控制的真空吸盘（25°C）上，可以通过电动的方式移动

x-y-z阶段。温度直接在太阳能电池背面测量。

• 自动校准EQE和反射率
• -提高吞吐量并减少操作员交互所需的时间。
• -使操作更安全，避免人为错误（失准，偏置光等）。
• -通过手动操作避免了参考太阳能电池的退化。
• 在EQE和反射率测量之间进行电机化接触设置和切换。
• 通过与分析电气和光学模型进行比较的数据分析。
• Duration：

- 大约。 1秒。每个波长用于点测量（2 x 2cm²）

- 大约。 9秒。每12.5×12.5平方厘米太阳能电池的波长

- 大约。 12秒每个波长15.6 x 15.6cm²太阳能电池

• 聚焦光斑（QMAP）的EQE和反射率映射

Spectral quantum efficiency
& reflectance

This tool is designed for the automated IQE analysis of
crystalline silicon solar cells. Some features are:

• The solar cells are illuminated with variable light, either homogeneously over an area of 20 x 20 mm,
  or with a focussed spot of approx. 1 x 3 mm².
• Full area EQE & reflectance measurements by moving the 4 cm² illuminated area continuously.
• Monochromatic light between 280-1600 nm from monochromator (2 gratings, slit width and order filter changed automatically). Typically used bandwidth is 8 nm FWHM and the wavelength accuracy is 1 nm.
• White bias light up to 1.2 suns is restricted to the area of monochromatic illumination.
• Bias-ramp for automatic determination of the correct bias light intensity for quasi-absolute EQE measurements
  in only one wavelength scan. The procedure is also useful to check the linearity of the solar cell.
• The reflectance is measured under an 8° tilted beam of 2 x 2 cm² area with a BaSO₄-coated integrating sphere.
• Batch mode for series of measurements under different conditions.
• The solar cells are held on a temperature controlled vacuum chuck (25 °C) which can be moved by a motorized
  x-y-z stage. The temperature is measured directly at the back of the solar cell.
• Transimpedance amplifier (max. 200 mA) holds solar cell at short circuit with remote sense
  and contact quality check.
• Automatic calibration of EQE and reflectance
  
  • –  increases throughput and reduces the necessary time of operator interaction.
  • –  makes the operation safer against human errors (misalignment, bias light, etc).
  • –  avoids degradation of the reference solar cell by manual handling.
• Motorized contact-setting and change-over between EQE and reflectance measurements.
• Data analysis by comparison with analytical electrical and optical model.
• Duration:
  
  • –  ca. 1 sec. per wavelength for spot measurement (2 x 2 cm²)
  • –  ca. 9 sec. per wavelength for 12.5 x 12.5 cm² solar cell
  • –  ca. 12 sec. per wavelength for 15.6 x 15.6 cm² solar cell
• EQE and reflectance mapping with focussed light spot (QMAP)
  within 5 min for a 15.6 x 15.6 cm² cell per map and wavelength.