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- W2851034890 endingPage "1800146" @default.
- W2851034890 startingPage "1800146" @default.
- W2851034890 abstract "Solution-process and low-temperature perovskites have motivated a broad range of interests and intensive studies for applications in solar cells (SCs) and photodetectors (PDs). Perovskite SCs with the bandgap of ≈1.5 eV currently exhibit the certified efficiency over 22% comparable with those of established thin film technologies. Meanwhile, perovskite PDs achieve superb performances in the visible region compared with commercial Si PDs. Partial substitution of Sn into Pb-based perovskites can tune the absorption to near-infrared (NIR) region, which would achieve an ideal-bandgap perovskite approaching the Shockley–Queisser-efficiency limit, low-bandgap perovskite-based bottom subcells in tandem devices (≈1.2 eV), and NIR photodetection. Here, various crystallization methods for growing low-bandgap Sn–Pb binary perovskites are presented. Their impacts on morphology, crystallinity, preferred orientation, carrier lifetimes, Urbach energy, and stability of the resultant Sn–Pb binary perovskites are highlighted. Then, a description is given of single-junction, 2-terminal, and 4-terminal SCs using these perovskites as absorbers, which achieve up-to-date efficiencies of 17.8%, 18.4%, and 21.2%, respectively. The current development of ultraviolet–visible–NIR PDs using these perovskites is also discussed. Furthermore, the challenges in controlling inter-grain Sn/Pb element distributions and perovskite stability, which will influence performance and stability of Sn–Pb perovskite-based devices, are presented. Finally, potential prospects are discussed for advancing low-bandgap Sn–Pb binary perovskite-based optoelectronic devices." @default.
- W2851034890 created "2018-07-19" @default.
- W2851034890 creator A5060226536 @default.
- W2851034890 creator A5071783800 @default.
- W2851034890 date "2018-07-08" @default.
- W2851034890 modified "2023-10-01" @default.
- W2851034890 title "Crystallization, Properties, and Challenges of Low-Bandgap Sn-Pb Binary Perovskites" @default.
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