Pressure-Induced Detrapping from Self-Trapped Excitons to Free Excitons toward Enhanced Emission and Piezochromism in Ruddlesden–Popper (110)-Oriented Perovskites

Two-dimensional (2D) lead halide perovskites are emerging as excellent materials for optoelectronic applications including light-emitting diodes, photovoltaics, and photodetectors, owing to their efficient excitonic emission originating from both self-trapped excitons (STEs) and free excitons (FEs)....

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Bibliographic Details
Main Author:	Mirosław Mączka (1305837) (author)
Other Authors:	Szymon Sobczak (1493101) (author), Kinga Roszak (2822744) (author), Daniel Linhares Militão Vasconcelos (9680929) (author), Filip Dybała (13267094) (author), Artur P. Herman (10223420) (author), Robert Kudrawiec (4905985) (author), Andrzej Katrusiak (1233849) (author), Paulo T. C. Freire (7937042) (author)
Published:	2025
Subjects:	Biophysics Pharmacology Evolutionary Biology Ecology Science Policy Space Science Environmental Sciences not elsewhere classified Chemical Sciences not elsewhere classified Physical Sciences not elsewhere classified underlying structural motifs ruddlesden – popper raman spectroscopy reveal establishing direct correlations acetamidinium ), accompanied related emission exhibits dominant emission mechanism reversible detrapping process lead halide perovskites occurring near 2 induced phase transitions fe emission dominates rarely observed pressure 2 </ sub emission changes arise 4 </ sub fe emission induced detrapping emission color induced reduction induced narrowing emission intensity trapped excitons situ single realizing light ray diffraction rare phenomenon pronounced change optical properties nanorange modulation many efforts higher pressures free excitons framework interactions fold increase findings elucidate external stimuli excellent materials enhanced functionalities emitting materials emitting diodes efficiently tuned crystal x corrugated structure band gap 7 gpa 56 gpa 2d perovskites
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Pressure-Induced Detrapping from Self-Trapped Excitons to Free Excitons toward Enhanced Emission and Piezochromism in Ruddlesden–Popper (110)-Oriented Perovskites

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