研究目的
Investigating the growth mechanism of the active layers of twin donor layer organic solar cell based on zinc and copper phthalocyanine materials at different substrate temperatures and its influence on the device performance.
研究成果
The study demonstrated an increase in photocurrent of twin donor layer organic solar cells by changing the substrate temperature. The highest efficiency of 0.274% was achieved at a substrate temperature of 150oC. The results provide guidelines to systematically improve this type of organic photovoltaic device by varying substrate temperature.
研究不足
The study is limited to the effect of substrate temperature on the performance of twin donor layer organic solar cells based on zinc and copper phthalocyanine. Other factors affecting device performance were not investigated.
1：Experimental Design and Method Selection
The study involved the fabrication and characterization of twin donor layer organic solar cells based on zinc and copper phthalocyanine at different substrate temperatures. The growth morphology was analyzed using AFM, and device performance was evaluated through J-V curve, FF, EQE, and EIS analysis.
2：Sample Selection and Data Sources
ITO coated glass substrate, ZnPc, CuPc, PEDOT: PSS, and Aluminum wire were used as materials. Thin films were deposited by thermal evaporation technique under 10-6 mbar of pressure.
3：List of Experimental Equipment and Materials
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4：Experimental Procedures and Operational Workflow
The substrates were cleaned and treated with UV-ozone. A layer of PEDOT: PSS was spin-coated and thermally treated. ZnPc and CuPc layers were evaporated by thermal deposition at different substrate temperatures. Finally, aluminium was evaporated to form the cathode electrode.
5：Data Analysis Methods
The electrical properties were characterized using a Keithley-2400 digital source meter. EQE was recorded using a Newport Oriel IQE-200. EIS was recorded by CH 680 Instrument.
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