Han Young Woo

Semitransparent Organic Photovoltaic Achieving 12.98% Efficiency and 33.95% Average Visible Light Transmittance by Employing PPT‐3 With Large Bandgap and Narrow Photon Harvesting Range

ABSTRACT A broad bandgap polymer PPT‐3 with optical bandgap of 2.25 eV and narrow photon harvesting range of 90 nm was deliberately selected to match with one narrow bandgap acceptor BTP‐eC9 for preparing semitransparent organic photovoltaics (ST‐OPVs). The optimal weight ratio o...

Oligoethylene Glycol Side‐Chain Engineering of Y6‐Derived Nonfullerene Acceptors for Thermally Induced Spontaneous Pseudo‐Planar Heterojunction Organic Photodetectors

ABSTRACT Dark current density ( J D ) fundamentally limits the noise characteristics and detectivity of organic photodetectors (OPDs), arising primarily from reverse‐bias carrier injection and trap‐mediated leakage pathways in donor‐acceptor (D‐A) bulk‐heterojunction (BHJ) active...

Topology Engineering Regulates Free Volume to Decouple Efficiency‐Mechanical Performance Trade‐Off in Intrinsically Stretchable Organic Solar Cells

ABSTRACT Intrinsically stretchable organic solar cells (IS‐OSCs) hold great promise for wearable electronics, yet their development is severely hindered by the trade‐off between efficiency and mechanical robustness, remaining a critical challenge. Herein, three polymerized small‐...

Over 20.1% Efficiency of Layer‐by‐Layer Organic Photovoltaics by Incorporating High Hole Mobility Material with Crystallinity

ABSTRACT Series of layer‐by‐layer organic photovoltaics (LOPVs) were constructed with polymer D18 as donor and small molecule L8‐BO with self‐dissociation characteristics as acceptor. The high hole mobility and good crystallinity semiconductor C8‐BTBT was deliberately incorporate...