SEARCH Articles Figures Tables Composite hole transport material Hole transporter Hole transporting Hole-transport materials Hole-transport materials, amination reactions Hole-transporting materials OLED application Hole-transporting materials advantage Hole-transporting materials blocking layers Hole-transporting materials cross-linkable Material transport Organic light-emitting diodes hole transport materials Photorefractive hole transport materials Photovoltaic device hole transporting material Polymer hole-transporting materials Polymer-based hole-transport materials Small-molecule-based hole-transport materials