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High-quality bulk hybrid perovskite single crystals within minutes by inverse temperature crystallization.

Saidaminov MI, Abdelhady AL, Murali B, Alarousu E, Burlakov VM, Peng W, Dursun I, Wang L, He Y, Maculan G, Goriely A, Wu T, Mohammed OF, Bakr OM - Nat Commun (2015)

Bottom Line: The process is based on our observation of the substantial decrease of MAPbX3 solubility, in certain solvents, at elevated temperatures.The crystals can be both size- and shape-controlled by manipulating the different crystallization parameters.The phenomenon of inverse or retrograde solubility and its correlated inverse temperature crystallization strategy present a major step forward for advancing the field on perovskite crystallization.

View Article: PubMed Central - PubMed

Affiliation: Division of Physical Sciences and Engineering, Solar and Photovoltaics Engineering Research Center, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Kingdom of Saudi Arabia.

ABSTRACT
Single crystals of methylammonium lead trihalide perovskites (MAPbX3; MA = CH3NH3(+), X = Br(-) or I(-)) have shown remarkably low trap density and charge transport properties; however, growth of such high-quality semiconductors is a time-consuming process. Here we present a rapid crystal growth process to obtain MAPbX3 single crystals, an order of magnitude faster than previous reports. The process is based on our observation of the substantial decrease of MAPbX3 solubility, in certain solvents, at elevated temperatures. The crystals can be both size- and shape-controlled by manipulating the different crystallization parameters. Despite the rapidity of the method, the grown crystals exhibit transport properties and trap densities comparable to the highest quality MAPbX3 reported to date. The phenomenon of inverse or retrograde solubility and its correlated inverse temperature crystallization strategy present a major step forward for advancing the field on perovskite crystallization.

No MeSH data available.


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Steady-state absorption and photoluminescence.(a) MAPbBr3 single crystal. (b) MAPbI3 single crystal. Insets: corresponding Tauc plots displaying the extrapolated optical band gaps.
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f3: Steady-state absorption and photoluminescence.(a) MAPbBr3 single crystal. (b) MAPbI3 single crystal. Insets: corresponding Tauc plots displaying the extrapolated optical band gaps.

Mentions: Further, we investigated optical and transport properties of the crystals, demonstrating that MAPbX3 obtained using ITC in few hours are comparable quality to previously reported crystals grown in several weeks. From the steady-state absorption measurements a sharp band edge is observed (Fig. 3a,b). Band gaps extracted from Tauc plots show values of 2.18 and 1.51 eV for MAPbBr3 and MAPbI3, respectively. The band gap values for crystals grown using ITC are in a good agreement with the values reported for single crystals grown at room temperature through antisolvent vapour-assisted crystallization17. The photoluminescence peak position of MAPbBr3 and MAPbI3 single crystals is located at 574 and 820 nm, respectively, matching the values reported earlier for the same single crystals grown using antisolvent vapour-assisted crystallization17.


High-quality bulk hybrid perovskite single crystals within minutes by inverse temperature crystallization.

Saidaminov MI, Abdelhady AL, Murali B, Alarousu E, Burlakov VM, Peng W, Dursun I, Wang L, He Y, Maculan G, Goriely A, Wu T, Mohammed OF, Bakr OM - Nat Commun (2015)

Steady-state absorption and photoluminescence.(a) MAPbBr3 single crystal. (b) MAPbI3 single crystal. Insets: corresponding Tauc plots displaying the extrapolated optical band gaps.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4544059&req=5

f3: Steady-state absorption and photoluminescence.(a) MAPbBr3 single crystal. (b) MAPbI3 single crystal. Insets: corresponding Tauc plots displaying the extrapolated optical band gaps.
Mentions: Further, we investigated optical and transport properties of the crystals, demonstrating that MAPbX3 obtained using ITC in few hours are comparable quality to previously reported crystals grown in several weeks. From the steady-state absorption measurements a sharp band edge is observed (Fig. 3a,b). Band gaps extracted from Tauc plots show values of 2.18 and 1.51 eV for MAPbBr3 and MAPbI3, respectively. The band gap values for crystals grown using ITC are in a good agreement with the values reported for single crystals grown at room temperature through antisolvent vapour-assisted crystallization17. The photoluminescence peak position of MAPbBr3 and MAPbI3 single crystals is located at 574 and 820 nm, respectively, matching the values reported earlier for the same single crystals grown using antisolvent vapour-assisted crystallization17.

Bottom Line: The process is based on our observation of the substantial decrease of MAPbX3 solubility, in certain solvents, at elevated temperatures.The crystals can be both size- and shape-controlled by manipulating the different crystallization parameters.The phenomenon of inverse or retrograde solubility and its correlated inverse temperature crystallization strategy present a major step forward for advancing the field on perovskite crystallization.

View Article: PubMed Central - PubMed

Affiliation: Division of Physical Sciences and Engineering, Solar and Photovoltaics Engineering Research Center, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Kingdom of Saudi Arabia.

ABSTRACT
Single crystals of methylammonium lead trihalide perovskites (MAPbX3; MA = CH3NH3(+), X = Br(-) or I(-)) have shown remarkably low trap density and charge transport properties; however, growth of such high-quality semiconductors is a time-consuming process. Here we present a rapid crystal growth process to obtain MAPbX3 single crystals, an order of magnitude faster than previous reports. The process is based on our observation of the substantial decrease of MAPbX3 solubility, in certain solvents, at elevated temperatures. The crystals can be both size- and shape-controlled by manipulating the different crystallization parameters. Despite the rapidity of the method, the grown crystals exhibit transport properties and trap densities comparable to the highest quality MAPbX3 reported to date. The phenomenon of inverse or retrograde solubility and its correlated inverse temperature crystallization strategy present a major step forward for advancing the field on perovskite crystallization.

No MeSH data available.


Related in: MedlinePlus