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  • Yu, HonglingLinköpings universitet,Biomolekylär och Organisk Elektronik,Tekniska fakulteten (author)

Efficient and Tunable Electroluminescence from In Situ Synthesized Perovskite Quantum Dots

  • Article/chapterEnglish2019

Publisher, publication year, extent ...

  • 2019-01-28
  • WILEY-V C H VERLAG GMBH,2019
  • electronicrdacarrier

Numbers

  • LIBRIS-ID:oai:DiVA.org:liu-154995
  • https://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-154995URI
  • https://doi.org/10.1002/smll.201804947DOI

Supplementary language notes

  • Language:English
  • Summary in:English

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  • Subject category:ref swepub-contenttype
  • Subject category:art swepub-publicationtype

Notes

  • Funding Agencies|ERC Starting Grant [717026]; Carl Tryggers Stiftelse; European Commission Marie SklodowskaCurie Actions [691210]; Swedish Government Strategic Research Area in Materials Science on Functional Materials at Linkoping University (Faculty Grant SFO-Mat-LiU) [2009-00971]; China Scholarship Council
  • Semiconductor quantum dots (QDs) are among the most promising next-generation optoelectronic materials. QDs are generally obtained through either epitaxial or colloidal growth and carry the promise for solution-processed high-performance optoelectronic devices such as light-emitting diodes (LEDs), solar cells, etc. Herein, a straightforward approach to synthesize perovskite QDs and demonstrate their applications in efficient LEDs is reported. The perovskite QDs with controllable crystal sizes and properties are in situ synthesized through one-step spin-coating from perovskite precursor solutions followed by thermal annealing. These perovskite QDs feature size-dependent quantum confinement effect (with readily tunable emissions) and radiative monomolecular recombination. Despite the substantial structural inhomogeneity, the in situ generated perovskite QDs films emit narrow-bandwidth emission and high color stability due to efficient energy transfer between nanostructures that sweeps away the unfavorable disorder effects. Based on these materials, efficient LEDs with external quantum efficiencies up to 11.0% are realized. This makes the technologically appealing in situ approach promising for further development of state-of-the-art LED systems and other optoelectronic devices.

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  • Wang, HeyongLinköpings universitet,Biomolekylär och Organisk Elektronik,Tekniska fakulteten(Swepub:liu)heywa58 (author)
  • Zhang, JiangbinUniv Cambridge, England; Imperial Coll London, England (author)
  • Lu, JunLinköpings universitet,Tunnfilmsfysik,Tekniska fakulteten(Swepub:liu)junlu07 (author)
  • Yuan, ZhongchengLinköpings universitet,Biomolekylär och Organisk Elektronik,Tekniska fakulteten(Swepub:liu)zhoyu49 (author)
  • Xu, WeidongLinköpings universitet,Biomolekylär och Organisk Elektronik,Tekniska fakulteten,Nanjing Tech Univ, Peoples R China(Swepub:liu)weixu55 (author)
  • Hultman, LarsLinköpings universitet,Tunnfilmsfysik,Tekniska fakulteten(Swepub:liu)larhu75 (author)
  • Bakulin, Artem A.Imperial Coll London, England (author)
  • Friend, Richard H.Univ Cambridge, England (author)
  • Wang, JianpuNanjing Tech Univ, Peoples R China (author)
  • Liu, XiaokeLinköpings universitet,Biomolekylär och Organisk Elektronik,Tekniska fakulteten,Univ Cambridge, England(Swepub:liu)xiali81 (author)
  • Gao, FengLinköpings universitet,Biomolekylär och Organisk Elektronik,Tekniska fakulteten(Swepub:liu)fenga88 (author)
  • Linköpings universitetBiomolekylär och Organisk Elektronik (creator_code:org_t)

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