Materials and Device Engineering Perspective: Recent Advances in Organic Photovoltaics

Area of Science:

• Materials Science
• Renewable Energy
• Organic Electronics

Background:

• Silicon photovoltaics dominate the solar energy market.
• Organic photovoltaics (OPVs) offer unique advantages like light weight, flexibility, and color tunability.
• Recent progress in nonfullerene acceptors has significantly boosted OPV performance.

Purpose of the Study:

• To review recent device engineering progress in organic photovoltaics (OPVs).
• To highlight advancements in active layer engineering for morphology control in OPVs.
• To summarize progress in transparent OPVs (TOPVs) and discuss future research directions.

Main Methods:

• Review of recent literature on OPV device engineering.
• Focus on active layer engineering for morphology control.
• Summary of bulk heterojunction (BHJ) and sequential layer-by-layer approaches.
• Review of transparent OPV (TOPV) designs, including active layer and optical structures.

Main Results:

• Organic PV technology has reached 20% power conversion efficiency (PCE).
• Active layer engineering has led to efficiencies of 19%-20% by controlling morphology.
• Transparent OPVs (TOPVs) show significant potential due to their unique features and design flexibility.

Conclusions:

• Organic photovoltaics are a promising renewable energy source with rapidly improving efficiency.
• Device engineering, particularly active layer control and TOPV designs, is crucial for future OPV development.
• OPVs are poised for new applications due to their unique properties and performance gains.