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Room‐Temperature Operation of a p‐Type Molecular Spin Photovoltaic Device on a Transparent Substrate
Advanced Materials ( IF 25.809 ) Pub Date : 2020-01-16 , DOI: 10.1002/adma.201906908
Kaushik Bairagi; David Garcia Romero; Francesco Calavalle; Sara Catalano; Elisabetta Zuccatti; Roger Llopis; Fèlix Casanova; Luis E. Hueso

The coupling of diverse degrees of freedom opens the door to physical effects that go beyond each of them individually, making multifunctionality a much sought‐after attribute for high‐performance devices. Here, the multifunctional operation of a single‐layer p‐type organic device, displaying both spin transport and photovoltaic effect at the room temperature on a transparent substrate, is shown. The generated photovoltage is almost three times larger than the applied bias to the device which facilitates the modulation of the magnetic response of the device with both bias and light. The device shows an increase in power conversion efficiency under magnetic field, an ability to invert the current with magnetic field and under certain conditions it can act as a spin photodetector with zero power consumption in the standby mode. The room‐temperature exploitation of the interplay among light, bias, and magnetic field in the single device with a p‐type molecule opens a way toward the development of efficient high‐performance spin photovoltaic cells.
更新日期:2020-01-16

 

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