Monitoring method and system used for in-situ real-time characterization of solar cell internal interface

Abstract

The invention discloses a monitoring method and system used for in-situ real-time characterization of a solar cell internal interface. The monitoring method comprises the following steps of using a laser light source to carry out irradiation and Raman spectrum scanning on a solar cell in a work state, and collecting Raman spectrums; and simultaneously, monitoring cell photovoltaic performance in real time, and analyzing and processing acquired Raman spectrum and I-V volt-ampere characteristic curve synchronization data to realize the in-situ real-time characterization of the solar cell internal interface. The system comprises the laser light source, a Raman spectrum acquisition unit, a detection unit and an analysis and processing unit, wherein the laser light source is at least used to carry out irradiation and Raman spectrum scanning on the solar cell in the work state; the detecting unit is at least used to monitor the cell photovoltaic performance of the solar cell; and the analysis and processing unit is at least used to obtain a relationship between Raman spectrum shift and solar cell performance and efficiency. Operation is simple, and the method and the system are suitable for monitoring information of changes of an internal interface structure and a composition of the solar cell in the work state with a photovoltaic effect.

Description

technical field [0001] The invention relates to a monitoring method for in-situ real-time characterization of the internal interface of a solar cell, in particular to a method for in-situ real-time monitoring of changes in the internal structure and components of a dye-sensitized solar cell by using surface-enhanced Raman spectroscopy, especially for working conditions In situ probing method and corresponding system of internal interfaces of dye-sensitized solar cells. Background technique [0002] The supply of clean and sustainable energy is considered to be one of the most important scientific and technological challenges facing mankind in the 21st century. Photovoltaic devices directly convert solar energy into electricity, providing a practical and sustainable solution to meet the growing global energy demand. However, since the first photovoltaic devices appeared in the 1950s, capturing solar energy at low cost while ensuring continuous stable and efficient operation ...

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Problems solved by technology

[0006] However, at present, there are very few literature reports on the in-situ characterization of photovoltaic devices using Raman technology at home and abroad.

There are few similar studies, and the most recent one is a series of studies on TiO2 based on the SERS substrate material of the simulated photovoltaic device structure and the study of the SERS enhancement mechanism. 2 Exploration of the adsorption mode and orientation of dye molecules (such as N719, N3 and BlackDye, etc.) on the surface of nanomaterials. At present, all SERS and Raman spectroscopy studies involving solar cells have not occurred in real working photovoltaic devices.

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