研究目的
Investigating the effect of PbS quantum dot-doped polysulfide nanofiber gel polymer electrolyte on the efficiency enhancement in CdS quantum dot-sensitized TiO2 solar cells.
研究成果
The addition of PbS QDs to the polysulfide electrolyte significantly enhances the efficiency of CdS QDSSCs, with the maximum efficiency observed at 5% (wt/wt) PbS QDs. This enhancement is attributed to the increased sulfide ion conductivity facilitated by PbS QDs. The incorporation of cellulose acetate nanofiber into the PbS QD-added liquid electrolyte results in a more stable, non-flowing gel state CdS QDSSC.
研究不足
The study is limited by the specific materials and methods used, such as the concentration of PbS QDs and the type of gel electrolyte. The mechanism by which PbS QDs enhance the ionic conductivity of the electrolyte is not fully understood and requires further investigation.
1：Experimental Design and Method Selection:
The study involved the fabrication of CdS QDSSCs using polysulfide liquid electrolytes and cellulose acetate nanofiber-based gel electrolytes. PbS quantum dots were incorporated into these electrolytes to study their effect on solar cell efficiency.
2：Sample Selection and Data Sources:
The materials used included Fluorine-doped tin oxide (FTO) coated glass, Titanium dioxide P90 powder, Hydrochloric acid, Titanium dioxide powder P25, Triton X-100, Polyethylene glycol, Methanol, Sulfur, Sodium sulfide hydrate, Lead (II) nitrate, Cellulose acetate, Dimethyl Sulfoxide, Cadmium (II) chloride, and acetone.
3：List of Experimental Equipment and Materials:
Equipment used included an electrospinning equipment (NaBond Technologies, Hong Kong), Shimadzu 2450 UV–VIS spectrophotometer, PGSTAT 128 N with FRA 32M Frequency Response Analyzer (Metrohm), and a computer controlled multi-meter (Keithley model 2000) coupled with potentiostat/galvanostat unit (HA-301).
4：1). Experimental Procedures and Operational Workflow:
4. Experimental Procedures and Operational Workflow: The TiO2 electrode was prepared by depositing a TiO2 P90 compact layer on a pre-cleaned FTO glass plate, followed by a TiO2 P25 mesoporous layer. CdS quantum dots were deposited on the TiO2 film using the successive ionic layer adsorption and reaction (SILAR) method. PbS quantum dots were prepared similarly and added to the polysulfide electrolyte. Cellulose acetate nanofibers were prepared and used to form a gel electrolyte. The photovoltaic performance of the solar cells was then characterized.
5：Data Analysis Methods:
The performance of the solar cells was analyzed using current density-output potential difference (J-E) measurements, electrochemical impedance spectroscopy (EIS), and incident photon to conversion efficiency (IPCE) 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-
Computer controlled multi-meter
2000
Keithley
Used for current density-output potential difference measurements.
-
Fluorine-doped tin oxide (FTO) coated glass
8 ? cm-2
Solarnoix
Used as a substrate for the TiO2 electrode.
-
Titanium dioxide P90 powder
Evonik
Used for the TiO2 compact layer.
-
Titanium dioxide powder P25
Degussa
Used for the TiO2 mesoporous layer.
-
Electrospinning equipment
NaBond Technologies
Used for depositing cellulose acetate nanofibers.
-
Shimadzu 2450 UV–VIS spectrophotometer
Shimadzu
Used for optical absorption measurements.
-
PGSTAT 128 N with FRA 32M Frequency Response Analyzer
Metrohm
Used for complex impedance measurements.
-
Potentiostat/galvanostat unit
HA-301
Used in conjunction with the multi-meter for photovoltaic performance characterization.
-
登录查看剩余6件设备及参数对照表
查看全部
