The Renaissance of Poly(3-hexylthiophene) as a Promising Hole-Transporting Material Toward Efficient and Stable...

Area of Science:

• Materials Science
• Renewable Energy
• Photovoltaics

Background:

• Perovskite solar cells (PSCs) are a promising photovoltaic technology.
• Hole-transporting materials (HTMs) are critical components in PSCs.
• Current HTMs like Spiro-OMeTAD and PTAA are expensive and unstable.

Purpose of the Study:

• To review strategies for improving poly(3-hexylthiophene) (P3HT) as a cost-effective HTM in PSCs.
• To address challenges in P3HT-based PSC efficiency and stability.
• To provide guidance for future research in P3HT-based PSC development.

Main Methods:

• Summarizing developed strategies for P3HT-based PSCs.
• Analyzing interface engineering techniques.
• Investigating morphology regulation and composite HTM formation.

Main Results:

• P3HT presents a low-cost, high-purity, and stable alternative HTM.
• Mismatched energy levels and poor interfacial contact limit P3HT-based PSC performance.
• Interface engineering, morphology control, and composite HTMs show potential for improvement.

Conclusions:

• Optimizing P3HT-based PSCs requires addressing interfacial and energy level mismatches.
• Further research in material design and device engineering is needed.
• P3HT offers a viable pathway for cost-effective and stable PSC commercialization.