研究目的
Investigating the enhancement of power conversion efficiency in inverted bulk-heterojunction hybrid solar cells by introducing a CdSe quantum dot interface buffer layer.
研究成果
The introduction of a CdSe QD buffer layer in inverted P3HT:PbS BHJ hybrid solar cells significantly improves device performance by enhancing charge extraction and reducing interface recombinations, leading to a 40% increase in PCE. The optimal performance was achieved with a 20 nm buffer layer of 4 nm CdSe QDs.
研究不足
The study is limited by the inherent properties of the materials used, such as the absorption window of cadmium-based QDs and the surface trap states of ZnO. Optimization of QD size and buffer layer thickness is crucial for performance enhancement.
1：Experimental Design and Method Selection:
The study involved the fabrication of an inverted P3HT:PbS BHJ hybrid solar cell with a CdSe QD buffer layer. The performance was optimized by controlling the size of CdSe QDs and the buffer layer thickness.
2：Sample Selection and Data Sources:
Materials included ITO coated glass substrates, P3HT, PbS and CdSe QDs, and other chemicals for synthesis and device fabrication.
3：List of Experimental Equipment and Materials:
Instruments used included a solar simulator, source meter, spectrophotometer, HR-TEM, SEM, and others for characterization.
4：Experimental Procedures and Operational Workflow:
The process involved synthesis of ZnO nanocrystals, PbS and CdSe QDs, device fabrication, and performance evaluation under ambient conditions.
5：Data Analysis Methods:
Performance parameters like VOC, JSC, FF, and PCE were analyzed. EQE, UPS, and FTIR were used for further characterization.
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-
Keithley 2400 source meter
2400
Keithley
Recording photovoltaic performances of the devices
-
BENTHAM PVE300 IPCE measurement system
PVE300
BENTHAM
Measuring External quantum efficiency spectra
-
Kratos AXIS ULTRA system
AXIS ULTRA
Kratos
Performing Ultraviolet Photoelectron Spectroscopy analysis
-
Agilent Cary 5000 UV-Vis-NIR Spectrophotometer
Cary 5000
Agilent
Recording absorption spectra of QDs dispersions
-
HORIBA Fluorolog-3 spectrometer
Fluorolog-3
HORIBA
Recording photoluminescence spectra of CdSe QDs
-
JEOL JEM-2100 microscope
JEM-2100
JEOL
Recording High-Resolution Transmission Electron Microscope images
-
Zeiss Sigma 300 SEM
Sigma 300
Zeiss
Taking Cross-sectional Scanning Electron Microscope images
-
Nicolet iS20 FTIR Spectrometer
iS20
Nicolet
Obtaining Fourier Transform Infrared Spectra
-
Oriel Sol3A Class AAA solar simulator
Sol3A
Oriel
Providing light illumination for device testing
-
登录查看剩余7件设备及参数对照表
查看全部
