Publication date: 17th February 2025
Recent advances in Non-Fullerene Acceptors (NFAs) have significantly enhanced the
performance of organic photovoltaics (OPVs), addressing limitations in energy level tuning,
light absorption, and charge mobility. The development of ITIC-type (2015) and Y6-type
(2019) NFAs has enabled power conversion efficiencies (PCE) exceeding 15%. [1][2][3]
Current certified records show PCEs of 20.5% for single-junction and more than 14% for
organic-organic tandem OPV devices. [4][5] Despite this rapid progress, challenges remain
in further improving efficiency, stability, and scalability. [2] Research at the NanoMicrofab
Laboratory, University of Rome Tor Vergata, targets these challenges through the design,
fabrication, and characterization of OPVs using low band-gap donor and NFA materials. Both
inverted and direct single-junction architectures have been optimized. Ongoing work
focuses on tandem devices development to achieve high-performance, scalable, and
versatile-in-application systems in the field of energy harvesting applications and non-
infrastructure-based communication technologies.
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