Spiroborate‐Based Host Materials with High Triplet Energies and Ambipolar Charge‐Transport Properties

Abstract

Figure 4. a) Energy diagram of the OLED materials (eV). The emitting layer comprises 1 wt % of the emitting material (ν-DABNA) and 99 wt % of the host material (SBON, SBON-Me, or mCBP). b) Normalized EL spectra of the OLEDs containing SBON (blue line), SBON-Me (red line), or mCBP (green line) as the host material. c) CIE (x, y) coordinates observed using the SBON device. d) Current density (solid) and luminance (dashed) as functions of driving voltage. e) EQE and f) power efficiency as functions of luminance.