Room-temperature electrochemically deposited polycrystalline SnO₂ with adjustable work function for high-efficiency perovskite solar cells

Abstract

Last two years, the study of SnO2 preparation and optimization is proved to be an effective path toward the Schottky limit of perovskite solar cells. Here, we use an electrochemical...

Towards scalability: progress in metal oxide charge transport layers for large-area perovskite solar cells

“…Beyond the CBD method, Sun et al were the first to report on the electrochemical deposition (ECD) of polycrystalline SnO 2 at room temperature for large-area perovskite solar cells. 46 By controlling the pH of the electrolyte, this method allowed for the modification of the SnO 2 work function, facilitating a better energy alignment with the perovskite layer. At the optimal pH value of 1, the device surpassed the performance of those made with commercial colloidal dispersion SnO 2 , achieving a PCE of 19.21% in the active area of 0.99 cm 2 .…”

“…(g) Image for electron chemical deposition (ECD). Reproduced with permission 46. Copyright 2023, Royal Society of Chemistry.…”

Facilitating Electron Transport in Perovskite Solar Cells Through Tailored SnO2 Film Composition

“…Moreover, alterations in the energy level were noted, necessitating compatibility with diverse perovskite materials. [ 24 ] It is necessary to explore CBD‐SnO 2 film technology capable of achieving suitable perovskite without the need for annealing. To engender the deposition of polycrystalline SnO 2 via the CBD technique, one must adjust the electrolyte's pH through urea.…”

Ligand-assisted solvothermal precipitation synthesis of quantum-sized SnO2 nanoparticles and their application in quantum dot light emitting diodes

“…17 In contrast, SnO 2 with a wide band gap of 3.50 eV and a high electron mobility up to 250 cm 2 V À1 s À1 possess extremely high chemical and thermal stability. [18][19][20] SnO 2 nanoparticle based ETLs have been widely used in many types of photoelectric devices, including perovskite solar cells, [21][22][23] perovskite LEDs, 24 dye-sensitized solar cells, 25,26 thin-film transistors, [27][28][29] and organic solar cells. 30 It has been demonstrated that SnO 2 nanoparticle based ETLs are highly promising and general electron transport layer materials in various photoelectric devices.…”

“…30 It has been demonstrated that SnO 2 nanoparticle based ETLs are highly promising and general electron transport layer materials in various photoelectric devices. [21][22][23][24][25][26][27][28][29][30] Nevertheless, bulk SnO 2 has a lower CBM position of À4.5 eV compared with the ZnO CBM position of À4.19 eV. 31 Normally, SnO 2 nanoparticles are not suitable as ETLs in cadmium-based QD-LEDs owing to their large electron injection barrier from SnO 2 to the QD emitter layer.…”