Device and method for measuring solar battery performance curves

Abstract

The invention provides a device for measuring solar battery performance curves, which comprises a monochromatic light source device, a shutter device, a background light source device, a sample cell, a short circuit current conversion device, a voltage measuring device and a control and calculation device, wherein the monochromatic light source device is used for simultaneously providing two beams of same monochromatic light; the shutter device is used for modulating the monochromatic light; the background light source device is used for providing background light irradiated on a battery to be measured; the sample cell is used for placing the battery to be measured and a reference battery; the short circuit current conversion device is used for converting short circuit light currents of the reference battery and the battery to be measured into voltages and amplifying the voltages; the voltage measuring device comprises a zero adjusting device and is used for carrying out zero adjustment on response of a sample to be measured to the background light so as to counteract the influence of an extracurrent signal generated by irradiation of the background light; and the control and calculation device is used for measuring, controlling and calculating the solar battery performance curves of the battery to be measured. Due to the adoption of the device provided by the invention, an IPCE (monochromatic incident photon-to-electron conversion efficiency) curve and a current response curve of the solar battery under different background light illumination conditions can be dynamically measured, the measuring accuracy can be improved, the measuring error is reduced, and the cost is reduced.

Description

technical field [0001] The invention relates to the application and testing field of semiconductor materials, in particular, the invention relates to a solar cell performance curve measuring device and a measuring method. Background technique [0002] Rational development and utilization of solar energy and development of solar cell industry are major issues for human beings to solve energy crisis and environmental pollution. The current response curve of the solar cell refers to the change curve of the short-circuit photocurrent of the battery increasing (attenuating) with time when the light is quickly added (removed). The solar cell IPCE (incident photon-to-electron conversion efficiency) curve is a parameter that characterizes the incident photon-to-electron conversion efficiency. Under a certain monochromatic light, IPCE is defined as the ratio between the number of electrons output to the external circuit and the total number of incident photons. ratio, its mathematic...

AI Technical Summary

Problems solved by technology

[0009] Finally, the existing solar cell measurement device does not have the function of measuring the current response characteristic of the solar cell, so a solar cell measurement device capable of measuring the current response curve of the solar cell is also needed

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