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Near‐infrared light‐responsive Cu‐doped Cs2AgBiBr6

SYSNO ASEP	0536344
Druh ASEP	J - Článek v odborném periodiku
Zařazení RIV	J - Článek v odborném periodiku
Poddruh J	Článek ve WOS
Název	Near‐infrared light‐responsive Cu‐doped Cs2AgBiBr6
Tvůrce(i)	Ji, F. (SE) Huang, Y. (SE) Wang, F. (SE) Kobera, Libor (UMCH-V)_{RID, ORCID} Xie, F. (CN) Klarbring, J. (SE) Abbrent, Sabina (UMCH-V)_{RID, ORCID} Brus, Jiří (UMCH-V)_{RID, ORCID} Yin, C. (SE) Simak, S. I. (SE) Abrikosov, I. A. (RU) Buyanova, I. A. (SE) Chen, W. M. (SE) Gao, F. (SE)
Číslo článku	2005521
Zdroj.dok.	Advanced Functional Materials - ISSN 1616-301X Roč. 30, č. 51 (2020), s. 1-7
Poč.str.	7 s.
Jazyk dok.	eng - angličtina
Země vyd.	DE - Německo
Klíč. slova	Cu doping ; lead-free double perovskites ; near-infrared absorption
Vědní obor RIV	CB - Analytická chemie, separace
Obor OECD	Analytical chemistry
CEP	GA19-05259S GA ČR - Grantová agentura ČR
Způsob publikování	Open access
Institucionální podpora	UMCH-V - RVO:61389013
UT WOS	000570170300001
EID SCOPUS	85091004042
DOI	10.1002/adfm.202005521
Anotace	Lead‐free halide double perovskites (A2BIBIIIX6) with attractive optical and electronic features are considered to be a promising candidate to overcome the toxicity and stability issues of lead halide perovskites (APbX3). However, their poor absorption profiles limit device performance. Here the absorption band edge of Cs2AgBiBr6 double perovskite to the near‐infrared range is significantly broadened by developing doped double perovskites, Cs2(Ag:Cu)BiBr6. The partial replacement of Ag ions by Cu ions in the crystal lattice is confirmed by the X‐ray photoelectron spectroscopy (XPS) and solid‐state nuclear magnetic resonance (ssNMR) measurements. Cu doping barely affects the bandgap of Cs2AgBiBr6, instead it introduces subbandgap states with strong absorption to the near‐infrared range. More interestingly, the near‐infrared absorption can generate band carriers upon excitation, as indicated by the photoconductivity measurement. This work sheds new light on the absorption modulation of halide double perovskites for future efficient optoelectronic devices.
Pracoviště	Ústav makromolekulární chemie
Kontakt	Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358
Rok sběru	2021
Elektronická adresa	https://onlinelibrary.wiley.com/doi/10.1002/adfm.202005521

Počet záznamů: 1