Carbon quantum dots as new hole transport material for perovskite solar cells

Benzoyl Peroxide as an Efficient Dopant for Spiro‐OMeTAD in Perovskite Solar Cells

“…[1,2] In most of the perovskite solar cells, suitable charge-transport layers are necessary for the efficient collection of photogenerated charges. Amongthe various materials used forh ole-transport layers (HTL), [3][4][5][6][7][8][9][10][11][12][13][14][15] 2,2',7,7'-tetrakis(N,N'-di-p-methoxyphenylamine)-9,9'-spirobifluorene (spiro-OMeTAD, Scheme 1) is the mostw idely used one, because of its desirable properties, such as low glass-transition temperature, high solubility,s uitable ionization potential, and good film-forming ability. [16,17] These merits bring both high performance ande asy fabrication to the devices.…”

Graphene and Carbon Quantum Dot-Based Materials in Photovoltaic Devices: From Synthesis to Applications

“…CDs have also been tested in the charge transport layers of perovskite solar cells as alternatives to the expensive hole transporter spiro-OMeTAD in the configuration FTO/TiO 2 dense/TiO 2 mesoporous/CH 3 NH 3 PbI 3-x Cl x /CDs/Au [35]. The dots were prepared by polymerization-carbonization of citric acid using p-phenylenediamine as passivating agent and deposited by solution processing onto the perovskite layer.…”

Direct white light emission from carbon nanodots (C-dots) in solution processed light emitting diodes

“…In addition, carbon based materials can be prepared using biocompatible products such as sugar or citric acid and, moreover, can be synthesized in non-halogenated solvents like ethanol or water 12 . The efforts of the research community have resulted in a multitude of examples of devices containing C-dots ranging from bio-imaging 13,14 , sensors 15 , solar cells 16,17 or light emitting diodes 18 . However, this approach has still some limitations such as their low emission quantum yield and the color emission tuning.…”