Triboelectric Nanogenerator‐Enabled Constant‐Charge Spectroscopy of Energy–Space Trap States in Polymer Dielectrics
Trap states govern charge transport, accumulation, and local‐field distortion in polymer dielectrics, yet quantitative mapping of their energy, density, and spatial distribution remains challenging. Here, triboelectric nanogenerator (TENG)‐enabled constant‐charge spectroscopy based on dielectric‐barrier discharge (DB...