%0 Journal Article %1 ADMA:ADMA201704217 %A Tsai, Hsinhan %A Nie, Wanyi %A Blancon, Jean-Christophe %A Stoumpos, Constantinos C. %A Soe, Chan Myae Myae %A Yoo, Jinkyoung %A Crochet, Jared %A Tretiak, Sergei %A Even, Jacky %A Sadhanala, Aditya %A Azzellino, Giovanni %A Brenes, Roberto %A Ajayan, Pulickel M. %A Bulović, Vladimir %A Stranks, Samuel D. %A Friend, Richard H. %A Kanatzidis, Mercouri G. %A Mohite, Aditya D. %D 2018 %J Advanced Materials %K led perovskite %N 6 %P n/a--n/a %R 10.1002/adma.201704217 %T Stable Light-Emitting Diodes Using Phase-Pure Ruddlesden–Popper Layered Perovskites %U http://dx.doi.org/10.1002/adma.201704217 %V 30 %X State-of-the-art light-emitting diodes (LEDs) are made from high-purity alloys of III–V semiconductors, but high fabrication cost has limited their widespread use for large area solid-state lighting. Here, efficient and stable LEDs processed from solution with tunable color enabled by using phase-pure 2D Ruddlesden–Popper (RP) halide perovskites with a formula (CH3(CH2)3NH3)2(CH3NH3)n−1PbnI3n+1 are reported. By using vertically oriented thin films that facilitate efficient charge injection and transport, efficient electroluminescence with a radiance of 35 W Sr−1 cm−2 at 744 nm with an ultralow turn-on voltage of 1 V is obtained. Finally, operational stability tests suggest that phase purity is strongly correlated to stability. Phase-pure 2D perovskites exhibit >14 h of stable operation at peak operating conditions with no droop at current densities of several Amperes cm−2 in comparison to mixtures of 2D/3D or 3D perovskites, which degrade within minutes.

@article{ADMA:ADMA201704217, abstract = {State-of-the-art light-emitting diodes (LEDs) are made from high-purity alloys of III–V semiconductors, but high fabrication cost has limited their widespread use for large area solid-state lighting. Here, efficient and stable LEDs processed from solution with tunable color enabled by using phase-pure 2D Ruddlesden–Popper (RP) halide perovskites with a formula (CH3(CH2)3NH3)2(CH3NH3)n−1PbnI3n+1 are reported. By using vertically oriented thin films that facilitate efficient charge injection and transport, efficient electroluminescence with a radiance of 35 W Sr−1 cm−2 at 744 nm with an ultralow turn-on voltage of 1 V is obtained. Finally, operational stability tests suggest that phase purity is strongly correlated to stability. Phase-pure 2D perovskites exhibit >14 h of stable operation at peak operating conditions with no droop at current densities of several Amperes cm−2 in comparison to mixtures of 2D/3D or 3D perovskites, which degrade within minutes.}, added-at = {2018-02-09T14:53:51.000+0100}, author = {Tsai, Hsinhan and Nie, Wanyi and Blancon, Jean-Christophe and Stoumpos, Constantinos C. and Soe, Chan Myae Myae and Yoo, Jinkyoung and Crochet, Jared and Tretiak, Sergei and Even, Jacky and Sadhanala, Aditya and Azzellino, Giovanni and Brenes, Roberto and Ajayan, Pulickel M. and Bulović, Vladimir and Stranks, Samuel D. and Friend, Richard H. and Kanatzidis, Mercouri G. and Mohite, Aditya D.}, biburl = {https://www.bibsonomy.org/bibtex/29b83ce8f04a9b64ae828beb87593690f/tammireddy}, description = {Stable Light-Emitting Diodes Using Phase-Pure Ruddlesden–Popper Layered Perovskites - Tsai - 2018 - Advanced Materials - Wiley Online Library}, doi = {10.1002/adma.201704217}, interhash = {946a1aae4c3979ac16da04968fcb722d}, intrahash = {9b83ce8f04a9b64ae828beb87593690f}, issn = {1521-4095}, journal = {Advanced Materials}, keywords = {led perovskite}, number = 6, pages = {n/a--n/a}, timestamp = {2018-02-09T14:54:52.000+0100}, title = {Stable Light-Emitting Diodes Using Phase-Pure Ruddlesden–Popper Layered Perovskites}, url = {http://dx.doi.org/10.1002/adma.201704217}, volume = 30, year = 2018 }