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https://intra.kth.se/en/aktuellt/kalender/organic-hole-transport-materials-for-perovskite-solar-cells-1.1006714?date=2020-09-30&orgdate=2020-05-18&length=1&orglength=228 Organic Hole-Transport Materials for Perovskite Solar Cells | KTH hole transport materials perovskite solar cells organic kth https://elmi.hbku.edu.qa/en/publications/alternative-p-type-metal-oxide-films-as-hole-transport-materials-/ Alternative p-type metal oxide films as hole transport materials for photovoltaic devices - Hamad... hole transport materials metal oxide for photovoltaic alternative type