研究目的
Investigating the effects of PTB7 added to P3HT:PC61BM on the optical and electrical properties of organic photodetectors (OPDs) to achieve high detectivity in the visible light wavelength.
研究成果
The addition of PTB7 with an appropriate mass ratio to P3HT:PC61BM enhances the exciton generation and dissociation probability, extends the response spectrum to 780 nm, and improves the photocurrent and detectivity of OPDs. The study provides a theoretical basis and preparation method for wide-spectrum high-sensitivity organic photodetectors with low bias voltage.
研究不足
The study is limited to the visible light wavelength range and specific materials (P3HT, PTB7, PC61BM). The performance of OPDs may vary with different materials or under different conditions.
1：Experimental Design and Method Selection:
The study involves preparing ternary bulk heterojunction (t-BHJ) OPDs based on P3HT, PTB7, and PC61BM with different mass ratios to investigate their optical and electrical properties.
2：Sample Selection and Data Sources:
The active layer material was co-dissolved in o-dichlorobenzene (o-DCB) and stirred at room temperature. ITO substrates were used for device fabrication.
3：List of Experimental Equipment and Materials:
Instruments include a Keithley 2636 semiconductor test system, TLS3 monochromatic light source, LS-45/55 fluorescence spectrometer, Shimadzu UV-3600 UV–Vis-NIR spectrometer, VB-400 ellipsometer, Nano Scope NS3A atomic force microscope (AFM), and Oriel QEPVSI-B. Materials include P3HT, PTB7, PC61BM, and PEDOT:PSS.
4：Experimental Procedures and Operational Workflow:
The process involves etching ITO mask patterns, cleaning substrates, spin-coating PEDOT:PSS and active layers, and evaporating Al electrodes.
5：Data Analysis Methods:
The responsivity (R), external quantum efficiency (EQE), and detectivity (D*) of the OPDs were calculated using specific equations to analyze the device performance.
独家科研数据包，助您复现前沿成果，加速创新突破
获取完整内容
