%0 Journal Article %1 ADMA:ADMA201701153 %A Sun, Haizhu %A Yang, Zhenyu %A Wei, Mingyang %A Sun, Wei %A Li, Xiyan %A Ye, Shuyang %A Zhao, Yongbiao %A Tan, Hairen %A Kynaston, Emily L. %A Schon, Tyler B. %A Yan, Han %A Lu, Zheng-Hong %A Ozin, Geoffrey A. %A Sargent, Edward H. %A Seferos, Dwight S. %D 2017 %J Advanced Materials %K nanocrystals perovskite %P n/a--n/a %R 10.1002/adma.201701153 %T Chemically Addressable Perovskite Nanocrystals for Light-Emitting Applications %U http://dx.doi.org/10.1002/adma.201701153 %X Whereas organic–inorganic hybrid perovskite nanocrystals (PNCs) have remarkable potential in the development of optoelectronic materials, their relatively poor chemical and colloidal stability undermines their performance in optoelectronic devices. Herein, this issue is addressed by passivating PNCs with a class of chemically addressable ligands. The robust ligands effectively protect the PNC surfaces, enhance PNC solution processability, and can be chemically addressed by thermally induced crosslinking or radical-induced polymerization. This thin polymer shield further enhances the photoluminescence quantum yields by removing surface trap states. Crosslinked methylammonium lead bromide (MAPbBr3) PNCs are applied as active materials to build light-emitting diodes that have low turn-on voltages and achieve a record luminance of over 7000 cd m−2, around threefold better than previous reported MA-based PNC devices. These results indicate the great potential of this ligand passivation approach for long lifespan, highly efficient PNC light emitters.

@article{ADMA:ADMA201701153, abstract = {Whereas organic–inorganic hybrid perovskite nanocrystals (PNCs) have remarkable potential in the development of optoelectronic materials, their relatively poor chemical and colloidal stability undermines their performance in optoelectronic devices. Herein, this issue is addressed by passivating PNCs with a class of chemically addressable ligands. The robust ligands effectively protect the PNC surfaces, enhance PNC solution processability, and can be chemically addressed by thermally induced crosslinking or radical-induced polymerization. This thin polymer shield further enhances the photoluminescence quantum yields by removing surface trap states. Crosslinked methylammonium lead bromide (MAPbBr3) PNCs are applied as active materials to build light-emitting diodes that have low turn-on voltages and achieve a record luminance of over 7000 cd m−2, around threefold better than previous reported MA-based PNC devices. These results indicate the great potential of this ligand passivation approach for long lifespan, highly efficient PNC light emitters.}, added-at = {2017-07-17T10:11:53.000+0200}, author = {Sun, Haizhu and Yang, Zhenyu and Wei, Mingyang and Sun, Wei and Li, Xiyan and Ye, Shuyang and Zhao, Yongbiao and Tan, Hairen and Kynaston, Emily L. and Schon, Tyler B. and Yan, Han and Lu, Zheng-Hong and Ozin, Geoffrey A. and Sargent, Edward H. and Seferos, Dwight S.}, biburl = {https://www.bibsonomy.org/bibtex/275f15ff07b41a218a5576c4a58201d31/fabianopkm}, doi = {10.1002/adma.201701153}, interhash = {d5146ae3c2dd53889103b271adcb0c91}, intrahash = {75f15ff07b41a218a5576c4a58201d31}, issn = {1521-4095}, journal = {Advanced Materials}, keywords = {nanocrystals perovskite}, pages = {n/a--n/a}, timestamp = {2017-07-17T10:11:53.000+0200}, title = {Chemically Addressable Perovskite Nanocrystals for Light-Emitting Applications}, url = {http://dx.doi.org/10.1002/adma.201701153}, year = 2017 }