Substrate effects on photoluminescence and low temperature phase transition of methylammonium lead iodide hybrid perovskite thin films

2017 ◽  
Vol 111 (2) ◽  
pp. 023902 ◽  
Author(s):  
S. A. Shojaee ◽  
T. A. Harriman ◽  
G. S. Han ◽  
J.-K. Lee ◽  
D. A. Lucca
Keyword(s):  
Thin Films ◽  
Phase Transition ◽  
Low Temperature ◽  
Temperature Phase ◽  
Lead Iodide ◽  
Substrate Effects ◽  
Hybrid Perovskite ◽  
Temperature Phase Transition ◽  
Methylammonium Lead Iodide ◽  
Low Temperature Phase

scholarly journals Room Temperature Phase Transition in Methylammonium Lead Iodide Perovskite Thin Films Induced by Hydrohalic Acid Additives

ChemSusChem ◽  
2016 ◽  
Vol 9 (18) ◽  
pp. 2656-2665 ◽  
Author(s):  
Chan Myae Myae Soe ◽  
Constantinos C. Stoumpos ◽  
Boris Harutyunyan ◽  
Eric F. Manley ◽  
Lin X. Chen ◽  
...  
Keyword(s):  
Thin Films ◽  
Phase Transition ◽  
Room Temperature ◽  
Temperature Phase ◽  
Lead Iodide ◽  
Temperature Phase Transition ◽  
Methylammonium Lead Iodide ◽  
Hydrohalic Acid

Possible low-temperature phase transition of Langmuir–Blodgett films of a charge–transfer complex detected by ESR

1998 ◽  
Vol 327-329 ◽  
pp. 391-394
Author(s):  
Keiichi Ikegami ◽  
Shin-ichi Kuroda ◽  
Tomoyuki Akutagawa ◽  
Taro Konuma ◽  
Takayoshi Nakamura ◽  
...  
Keyword(s):  
Phase Transition ◽  
Charge Transfer ◽  
Low Temperature ◽  
Charge Transfer Complex ◽  
Temperature Phase ◽  
Langmuir Blodgett ◽  
Langmuir Blodgett Films ◽  
Temperature Phase Transition ◽  
A Charge ◽  
Low Temperature Phase

Low‐Temperature Phase Transition of Vanadium Sesquioxide

1970 ◽  
Vol 41 (2) ◽  
pp. 836-838 ◽  
Author(s):  
Mitsuoki Nakahira ◽  
Shigeo Horiuchi ◽  
Hirotoshi Ooshima
Keyword(s):  
Phase Transition ◽  
Low Temperature ◽  
Temperature Phase ◽  
Vanadium Sesquioxide ◽  
Temperature Phase Transition ◽  
Low Temperature Phase

scholarly journals Phase transition and proton ordering at 50 K in 3-(pyridin-4-yl)pentane-2,4-dione

2017 ◽  
Vol 73 (6) ◽  
pp. 1172-1178 ◽  
Author(s):  
Khai-Nghi Truong ◽  
Carina Merkens ◽  
Martin Meven ◽  
Björn Faßbänder ◽  
Richard Dronskowski ◽  
...  
Keyword(s):  
Phase Transition ◽  
Low Temperature ◽  
Single Crystal ◽  
Structural Phase ◽  
Pyridyl Ring ◽  
Temperature Phase ◽  
Crystallographic Axis ◽  
Temperature Phase Transition ◽  
Intramolecular Hydrogen ◽  
Low Temperature Phase

Single-crystal neutron diffraction experiments at 100 and 2.5 K have been performed to determine the structure of 3-(pyridin-4-yl)pentane-2,4-dione (HacacPy) with respect to its protonation pattern and to monitor a low-temperature phase transition. Solid HacacPy exists as the enol tautomer with a short intramolecular hydrogen bond. At 100 K, its donor···acceptor distance is 2.450 (8) Å and the compound adopts space group C2/c, with the N and para-C atoms of the pyridyl ring and the central C of the acetylacetone substituent on the twofold crystallographic axis. As a consequence of the axial symmetry, the bridging hydrogen is disordered over two symmetrically equivalent positions, and the carbon–oxygen bond distances adopt intermediate values between single and double bonds. Upon cooling, a structural phase transition to the t 2 subgroup P\bar 1 occurs; the resulting twins show an ordered acetylacetone moiety. The phase transition is fully reversible but associated with an appreciable hysteresis in the large single crystal under study: transition to the low-temperature phase requires several hours at 2.5 K and heating to 80 K is required to revert the transformation. No significant hysteresis is observed in a powder sample, in agreement with the second-order nature of the phase transition.

scholarly journals Unexpected Cation Dynamics in the Low-Temperature Phase of Methylammonium Lead Iodide: The Need for Improved Models

2016 ◽  
Vol 7 (22) ◽  
pp. 4701-4709 ◽  
Author(s):  
Kacper Drużbicki ◽  
Roberto Simone Pinna ◽  
Svemir Rudić ◽  
Marek Jura ◽  
Giuseppe Gorini ◽  
...  
Keyword(s):  
Low Temperature ◽  
Temperature Phase ◽  
Lead Iodide ◽  
Methylammonium Lead Iodide ◽  
Low Temperature Phase

Low-Temperature Phase Transition Detected by ESR in α′-(BEDT-TTF)2IBr2 Single Crystals

2011 ◽  
Vol 41 (2-4) ◽  
pp. 363-370
Author(s):  
Alisa Chernenkaya ◽  
Marina Kirman ◽  
Alexei Dmitriev ◽  
Roman Morgunov ◽  
Oksana Koplak ◽  
...  
Keyword(s):  
Phase Transition ◽  
Low Temperature ◽  
Single Crystals ◽  
Temperature Phase ◽  
Temperature Phase Transition ◽  
Low Temperature Phase
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