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Published on: February 27, 2017
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Computational Screening Two-Dimensional Conjugated Microporous Polymer Applied in Perovskite Solar Cells
Ruixia Yang1, Di Liu1, Jiuyan Li2
1Frontier Science Center for Smart Materials, College of Chemistry, Dalian University of Technology, 2 Linggong Road, Dalian, 116024, China.
Chemistry (Weinheim an Der Bergstrasse, Germany)
|September 16, 2024
Summary
A novel 2D conjugated microporous polymer enhances perovskite solar cell performance by improving hole transport and reducing recombination. This material boosts efficiency to 24.64%, paving the way for industrialization.
Area of Science:
- Materials Science
- Renewable Energy
- Nanotechnology
Background:
- Perovskite solar cells (PSCs) are promising renewable energy devices.
- Efficient charge extraction and transport in PSCs are crucial for performance.
- Existing hole transport layers (HTLs) face limitations in energy level alignment and recombination.
Purpose of the Study:
- To synthesize and investigate a novel 2D conjugated microporous polymer (2D CMP).
- To utilize 2D CMP as an interfacial modifier for the HTL in inverted PSCs.
- To enhance the photoelectric properties and overall efficiency of PSCs.
Main Methods:
- Synthesis of 2D conjugated microporous polymer nanosheets.
- Fabrication of inverted PSCs with 2D CMP modified HTLs.
- Characterization of energy level alignment, charge mobility, and recombination dynamics.
- Device performance testing and efficiency measurements.
Main Results:
- The 2D CMP exhibits favorable Fermi level alignment with perovskite and a high conduction band to block electrons.
- Modification with 2D CMP significantly enhances hole mobility and reduces charge recombination.
- The mesoporous structure of 2D CMP facilitates perovskite infiltration, increasing hole export.
- Achieved a power conversion efficiency of 24.64% in inverted PSCs, up from 21.17% in control devices.
Conclusions:
- 2D conjugated microporous polymers are effective interfacial materials for PSCs.
- The developed 2D CMP improves charge transport and reduces recombination, leading to higher device efficiency.
- Large-scale synthesis potential suggests significant implications for the industrialization of PSCs.
