Synthesis of All-Inorganic Cd-Doped CsPbCl 3 Perovskite Nanocrystals with Dual-Wavelength Emission

Tong Cai, Hanjun Yang, Katie Hills-Kimball, Jeong Pil Song, Hua Zhu, Elan Hofman, Weiwei Zheng, Brenda M. Rubenstein, Ou Chen

Research output: Contribution to journalArticlepeer-review

92 Scopus citations


Doped lead halide perovskite nanocrystals (NCs) have garnered significant attention due to their superior optoelectronic properties. Here, we report a synthesis of Cd-doped CsPbCl 3 NCs by decoupling Pb- and Cl-precursors in a hot injection method. The resulting Cd-doped perovskite NCs manifest a dual-wavelength emission profile with the first reported example of Cd-dopant emission. By controlling Cd-dopant concentration, the emission profile can be tuned with a dopant emission quantum yield of up to 8%. A new secondary emission (∼610 nm) is induced by an energy transfer process from photoexcited hosts to Cd-dopants and a subsequent electronic transition from the excited state ( 3 E g ) to the ground state ( 1 A 1g ) of [CdCl 6 ] 4- units. This electronic transition matches well with a first-principles density functional theory calculation. Further, the optical behavior of Cd-doped CsPbCl 3 NCs can be altered through postsynthetic anion-exchange reactions. Our studies present a new model system for doping chemistry studies in semiconductors for various optoelectronic applications.

Original languageEnglish (US)
Pages (from-to)7079-7084
Number of pages6
JournalJournal of Physical Chemistry Letters
Issue number24
StatePublished - Dec 20 2018

ASJC Scopus subject areas

  • General Materials Science
  • Physical and Theoretical Chemistry


Dive into the research topics of 'Synthesis of All-Inorganic Cd-Doped CsPbCl 3 Perovskite Nanocrystals with Dual-Wavelength Emission'. Together they form a unique fingerprint.

Cite this