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Related Experiment Video

Updated: May 23, 2026

Close-Space Sublimation-Deposited Ultra-Thin CdSeTe/CdTe Solar Cells for Enhanced Short-Circuit Current Density and Photoluminescence

Close-Space Sublimation-Deposited Ultra-Thin CdSeTe/CdTe Solar Cells for Enhanced Short-Circuit Current Density and Photoluminescence

Published on: March 6, 2020

Highly efficient inverted type-I CdS/CdSe core/shell structure QD-sensitized solar cells.

Zhenxiao Pan¹, Hua Zhang, Kan Cheng

¹Shanghai Key Laboratory of Functional Materials Chemistry, Institute of Applied Chemistry, East China University of Science and Technology, Shanghai 200237, China.

|April 19, 2012

Summary

High-quality cadmium sulfide/cadmium selenide (CdS/CdSe) core/shell quantum dots achieved a record 5.32% power conversion efficiency in quantum dot sensitized solar cells (QDSCs). This was enabled by a novel deposition technique using mercaptopropionic acid (MPA) linkers and specific cell components.

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Last Updated: May 23, 2026

Close-Space Sublimation-Deposited Ultra-Thin CdSeTe/CdTe Solar Cells for Enhanced Short-Circuit Current Density and Photoluminescence

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Fabrication of Fully Solution Processed Inorganic Nanocrystal Photovoltaic Devices

Fabrication of Fully Solution Processed Inorganic Nanocrystal Photovoltaic Devices

Published on: July 8, 2016

Area of Science:

Materials Science
Nanotechnology
Photovoltaics

Background:

Quantum dot sensitized solar cells (QDSCs) offer a promising alternative to traditional solar energy conversion technologies.
Achieving high power conversion efficiency in QDSCs requires optimizing quantum dot properties and device architecture.

Purpose of the Study:

To develop and optimize CdS/CdSe core/shell quantum dots (QDs) for enhanced QDSC performance.
To investigate the impact of QD synthesis, surface functionalization, and deposition techniques on photovoltaic efficiency.

Main Methods:

Synthesized CdS/CdSe core/shell QDs using an organometallic high-temperature injection method.
Functionalized QDs with mercaptopropionic acid (MPA) for water dispersibility and improved TiO(2) electrode adhesion.
Fabricated QDSCs using a modified deposition technique, ZnS passivation, post-sintering, and a polysulfide electrolyte with a Cu(2)S counterelectrode.

Main Results:

Achieved a record power conversion efficiency of 5.32% for CdS/CdSe QDSCs under simulated AM 1.5 illumination.
Optimized CdSe shell thickness and absorption onset for improved light harvesting.
Demonstrated enhanced photocurrent and fill factor through the use of polysulfide electrolyte and Cu(2)S counterelectrode.

Conclusions:

The combination of high-quality CdS/CdSe core/shell QDs, MPA linker molecules, and optimized device fabrication leads to record photovoltaic performance in QDSCs.
The developed deposition and passivation strategies are crucial for realizing the full potential of QD-based solar cells.
This work highlights the significant progress in QDSC technology towards efficient and scalable solar energy solutions.