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Materials and Device Engineering Perspective: Recent Advances in Organic Photovoltaics.

Ying Zhang^1,2, Hao Xia¹, Jiangsheng Yu¹

¹Department of Electrical and Electronic Engineering, Research Institute for Smart Energy (RISE) Photonic Research Institute (PRI), The Hong Kong Polytechnic University, Hong Kong, 999077, China.

Advanced Materials (Deerfield Beach, Fla.)

|May 28, 2025

Summary

Organic photovoltaics (OPVs) now achieve 20% power conversion efficiency (PCE), offering lightweight, flexible solar energy solutions. Recent advancements in active layer engineering and transparent OPV (TOPV) designs drive this progress.

Keywords:

device engineering morphology control nonfullerene acceptors and donors organic photovoltaic semitransparent

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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.