Related Experiment Video
Updated: Jun 18, 2026
08:29
Morphology Control for Fully Printable Organic–Inorganic Bulk-heterojunction Solar Cells Based on a Ti-alkoxide and Semiconducting Polymer
Published on: January 10, 2017
9.5K
Multifunctional Fullerene Derivative for Interface Engineering in Perovskite Solar Cells.
Yaowen Li1,2, Yue Zhao1, Qi Chen2
1Laboratory of Advanced Optoelectronic Materials, College of Chemistry, Chemical Engineering and Materials Science, Soochow University , Suzhou 215123, China.
Journal of the American Chemical Society
|November 24, 2015
Summary
Interface engineering in perovskite solar cells using PCBB-2CN-2C8 significantly boosts performance. This fullerene derivative passivates TiO2 surfaces, reducing charge recombination and enhancing device stability and efficiency.
Area of Science:
- Materials Science
- Renewable Energy
- Nanotechnology
Background:
- The interface between TiO2 and perovskite layers is crucial for solar cell performance.
- Deep trap states on TiO2 surfaces cause charge recombination and reduce stability.
- Effective interface engineering is needed to overcome these limitations.
Purpose of the Study:
- To synthesize a novel fullerene derivative, PCBB-2CN-2C8, for interface engineering.
- To improve charge extraction and reduce recombination losses in perovskite solar cells.
- To enhance the photovoltaic performance and stability of perovskite solar cells.
Main Methods:
- Rational molecular design and synthesis of PCBB-2CN-2C8.
- Modification of TiO2 surfaces with PCBB-2CN-2C8 in perovskite solar cells.
- Characterization of photovoltaic performance, electrical properties, and stability.
Main Results:
- PCBB-2CN-2C8 modification improved open circuit voltage from 0.99 to 1.06 V.
- Fill factor increased from 72.2% to 79.1%, leading to a 20.7% efficiency enhancement.
- Shelf lifetime under ambient conditions improved by over 4 times (40 h to 200 h).
Conclusions:
- PCBB-2CN-2C8 effectively passivates TiO2 surface trap states, reducing charge recombination.
- The modified interface enhances charge extraction and device performance.
- This approach offers a viable strategy for improving perovskite solar cell efficiency and stability.
