研究目的
Investigating the effects of copper activation engineering on the performance of CdTe solar cells, specifically focusing on controlling the concentration and distribution of Cu to maximize device efficiency.
研究成果
The study concludes that using a CuCl solution treatment and RTA process effectively controls the concentration and distribution of Cu in CdTe absorbers, leading to a champion CdTe thin-film solar cell with a power conversion efficiency of 17.5%. This approach significantly reduces the amount of Cu needed and optimizes its distribution, enhancing device performance.
研究不足
The study acknowledges the high mobility of Cu in CdTe films and the challenge of controlling its distribution and concentration to avoid compensative donor-like defects and recombination centers. The need for precise control over Cu dosage and annealing conditions is highlighted as a potential limitation.
1：Experimental Design and Method Selection:
The study employs a cuprous chloride (CuCl) solution treatment and rapid thermal annealing (RTA) to control Cu concentration and distribution in CdTe absorbers.
2：Sample Selection and Data Sources:
Fluorine doped tin oxide (FTO) coated glass is used as the substrate for fabricating CdTe solar cells.
3：List of Experimental Equipment and Materials:
Includes a Hitachi 2300A scanning transmission electron microscope (STEM), a solar simulator (PV Measurements Inc.), and a source meter (Keithley 2400).
4：0). Experimental Procedures and Operational Workflow:
4. Experimental Procedures and Operational Workflow: The process involves cleaning substrates, depositing ZMO buffer layers, CdTe films by close space sublimation (CSS), CuCl solution treatment, and rapid thermal annealing.
5：Data Analysis Methods:
Performance characterization through current density-voltage (J-V) curves, secondary ion mass spectroscopy (SIMS), and photoluminescence (PL) measurements.
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-
Source meter
2400
Keithley
Measurement of current density-voltage (J-V) curves.
-
Temperature controller
330
Lakeshore
Control of temperature during measurements.
-
ICP-MS instrument
X Series 2
Thermo Fisher Scientific
Measurement of Cu concentration in the saturated Cu(I)Cl solution.
-
Hitachi 2300A scanning transmission electron microscope
2300A
Hitachi Inc.
Characterization of the cross-sectional microstructures of the CdTe films.
-
Solar simulator
PV Measurements Inc.
Characterization of solar cell performance under AM1.5G illumination.
-
TOF-SIMS5
TOF-SIMS5
ION-TOF GmbH
Secondary ion mass spectroscopy (SIMS) depth profiling.
-
Solartron Modulab potentiostat
Modulab
Ametek Inc.
Temperature-dependent current-voltage (J-V-T) and thermal admittance spectroscopy (TAS) measurements.
-
Liquid nitrogen cooling cryo-system
VPF-100
Janis
Temperature-dependent measurements.
-
Horiba iHR320 monochromator
iHR320
Horiba
Detection of PL signal.
-
登录查看剩余7件设备及参数对照表
查看全部
