TY - GEN
T1 - Continuous wave amplified spontaneous emission in phase-stable triple cation lead halide perovskite thin films
AU - Allegro, Isabel
AU - Brenner, Philipp
AU - Bar-On, Ofer
AU - Jakoby, Marius
AU - Richards, Bryce S.
AU - Paetzold, Ulrich W.
AU - Howard, Ian A.
AU - Scheuer, Jacob
AU - Lemmer, Uli
N1 - Publisher Copyright:
© 2019 IEEE.
PY - 2019/6
Y1 - 2019/6
N2 - Perovskite thin films possess excellent light absorption and light emission properties, as well as a high defect tolerance and high charge carrier mobilities [1]. These properties founded their rapid development in solar cell applications and established this new class of materials as a strong candidate for solution-processed light-emitting applications and on-chip laser sources [2]. So far, the focus has been on investigating the laser behaviour under short pulsed excitation, given the laser death phenomenon observed after a few hundreds of nanoseconds of excitation [3]. Clear CW lasing in perovskites still remains a challenge: It was only observed in a single cation perovskite at a specific temperature of 100 K, where the optical gain originates from small inclusions of a pump-induced crystal phase [3], an unviable approach for practical applications. In contrast, we found that sustained CW operation is possible over a temperature range of ∼80-130 K if the methylammonium (MA) cation is partially replaced by formamidinium (FA) and Caesium.
AB - Perovskite thin films possess excellent light absorption and light emission properties, as well as a high defect tolerance and high charge carrier mobilities [1]. These properties founded their rapid development in solar cell applications and established this new class of materials as a strong candidate for solution-processed light-emitting applications and on-chip laser sources [2]. So far, the focus has been on investigating the laser behaviour under short pulsed excitation, given the laser death phenomenon observed after a few hundreds of nanoseconds of excitation [3]. Clear CW lasing in perovskites still remains a challenge: It was only observed in a single cation perovskite at a specific temperature of 100 K, where the optical gain originates from small inclusions of a pump-induced crystal phase [3], an unviable approach for practical applications. In contrast, we found that sustained CW operation is possible over a temperature range of ∼80-130 K if the methylammonium (MA) cation is partially replaced by formamidinium (FA) and Caesium.
UR - http://www.scopus.com/inward/record.url?scp=85074638477&partnerID=8YFLogxK
U2 - 10.1109/CLEOE-EQEC.2019.8871688
DO - 10.1109/CLEOE-EQEC.2019.8871688
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AN - SCOPUS:85074638477
T3 - 2019 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2019
BT - 2019 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2019
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2019 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2019
Y2 - 23 June 2019 through 27 June 2019
ER -