Journal ArticleDOI
Anion-exchange red perovskite quantum dots with ammonium iodine salts for highly efficient light-emitting devices
Takayuki Chiba,Yukihiro Hayashi,Hinako Ebe,Keigo Hoshi,Jun Sato,Shugo Sato,Yong-Jin Pu,Satoru Ohisa,Junji Kido +8 more
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TLDR
In this paper, a red perovskite quantum dot-based light-emitting devices were fabricated by anion exchange from pristine CsPbBr3 using halide-anion-containing alkyl ammonium and aryl ionium salts.Abstract:
Perovskite quantum dots have significant potential for light-emitting devices because of their high colour purity and colour tunability in the visible spectrum. Here, we report highly efficient red perovskite quantum dot-based light-emitting devices. The quantum dots were fabricated by anion exchange from pristine CsPbBr3 using halide-anion-containing alkyl ammonium and aryl ammonium salts. Anion-exchange quantum dots based on ammonium iodine salts exhibited a strong redshift from green emission to a deep-red emission at 649 nm as well as higher photoluminescence quantum yields. Furthermore, the quantum dot-based light-emitting device with the alkyl ammonium iodine salt exhibited an external quantum efficiency of 21.3% and high colour purity, with Commission Internationale de l’Eclairage coordinates of (0.72, 0.28), while the light-emitting device with the aryl ammonium iodine salt showed an external quantum efficiency of 14.1%. Finally, the operational stability of the latter was 36 times higher because the surface ligand density of the corresponding quantum dots was lower. Perovskite quantum dots (QDs) are synthesized via an anion-exchange process where CsPbBr3 is used to realize a highly efficient red light-emitting diode (LED). The perovskite QD-based LED exhibits the highest external quantum efficiency of more than 20% compared with perovskite LEDs.read more
Citations
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Efficient perovskite solar cells via improved carrier management
Jason J. Yoo,Gabkyung Seo,Matthew R. Chua,Tae Gwan Park,Yongli Lu,Fabian Rotermund,Young-Ki Kim,Chan Su Moon,Nam Joong Jeon,Juan-Pablo Correa-Baena,Vladimir Bulovic,Seong Sik Shin,Moungi G. Bawendi,Jangwon Seo +13 more
TL;DR: In this paper, an electron transport layer with an ideal film coverage, thickness and composition was developed by tuning the chemical bath deposition of tin dioxide (SnO2) to improve the performance of metal halide perovskite solar cells.
Journal ArticleDOI
Metal halide perovskites for light-emitting diodes.
TL;DR: The development of perovskite emitters, their use in light-emitting devices, and the challenges in enhancing the efficiency and stability, as well as reducing the potential toxicity of this technology are discussed in this Review.
Journal ArticleDOI
Perovskites for Next-Generation Optical Sources.
TL;DR: This review links metal halide perovskites' performance as efficient light emitters with their underlying materials electronic and photophysical attributes.
Journal ArticleDOI
State of the Art and Prospects for Halide Perovskite Nanocrystals.
Amrita Dey,Junzhi Ye,Apurba De,Elke Debroye,Seung Kyun Ha,Eva Bladt,Anuraj S. Kshirsagar,Ziyu Wang,Jun Yin,Jun Yin,Yue Wang,Li Na Quan,Li Na Quan,Fei Yan,Mengyu Gao,Mengyu Gao,Xiaoming Li,Javad Shamsi,Tushar Debnath,Muhan Cao,Manuel A. Scheel,Sudhir Kumar,Julian A. Steele,Marina Gerhard,Lata Chouhan,Ke Xu,Ke Xu,Xian-Gang Wu,Yanxiu Li,Yangning Zhang,Anirban Dutta,Chuang Han,Ilka Vincon,Andrey L. Rogach,Angshuman Nag,Anunay Samanta,Brian A. Korgel,Chih-Jen Shih,Daniel R. Gamelin,Dong Hee Son,Haibo Zeng,Haizheng Zhong,Handong Sun,Hilmi Volkan Demir,Hilmi Volkan Demir,Ivan G. Scheblykin,Iván Mora-Seró,Jacek K. Stolarczyk,Jin Z. Zhang,Jochen Feldmann,Johan Hofkens,Johan Hofkens,Joseph M. Luther,Julia Pérez-Prieto,Liang Li,Liberato Manna,Maryna I. Bodnarchuk,Maryna I. Bodnarchuk,Maksym V. Kovalenko,Maksym V. Kovalenko,Maarten B. J. Roeffaers,Narayan Pradhan,Omar F. Mohammed,Osman M. Bakr,Peidong Yang,Peter Müller-Buschbaum,Prashant V. Kamat,Qiaoliang Bao,Qiao Zhang,Roman Krahne,Raquel E. Galian,Samuel D. Stranks,Sara Bals,Vasudevanpillai Biju,William A. Tisdale,Yong Yan,Robert L. Z. Hoye,Lakshminarayana Polavarapu,Lakshminarayana Polavarapu +78 more
TL;DR: A comprehensive review of metal-halide perovskite nanocrystals can be found in this article, where researchers having expertise in different fields (chemistry, physics, and device engineering) have joined together to provide a state-of-the-art overview and future prospects of metalhalide nanocrystal research.
Journal ArticleDOI
Bipolar-shell resurfacing for blue LEDs based on strongly confined perovskite quantum dots
Yitong Dong,Ya-Kun Wang,Ya-Kun Wang,Fanglong Yuan,Andrew Johnston,Yuan Liu,Dongxin Ma,Min-Jae Choi,Bin Chen,Mahshid Chekini,Se-Woong Baek,Se-Woong Baek,Laxmi Kishore Sagar,James Z. Fan,Yi Hou,Mingjian Wu,Seungjin Lee,Bin Sun,Sjoerd Hoogland,Rafael Quintero-Bermudez,Hinako Ebe,Petar Todorović,Filip Dinic,Peicheng Li,Hao Ting Kung,Makhsud I. Saidaminov,Makhsud I. Saidaminov,Eugenia Kumacheva,Erdmann Spiecker,Liang-Sheng Liao,Oleksandr Voznyy,Zheng-Hong Lu,Edward H. Sargent +32 more
TL;DR: Perovskite QD resurfacing is reported to achieve a bipolar shell consisting of an inner anion shell, and an outer shell comprised of cations and polar solvent molecules, to fabricate blue and green light-emitting diodes with improved mobility.
References
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Journal ArticleDOI
Nanocrystals of Cesium Lead Halide Perovskites (CsPbX3, X = Cl, Br, and I): Novel Optoelectronic Materials Showing Bright Emission with Wide Color Gamut
Loredana Protesescu,Loredana Protesescu,Sergii Yakunin,Sergii Yakunin,Maryna I. Bodnarchuk,Maryna I. Bodnarchuk,Franziska Krieg,Franziska Krieg,Riccarda Caputo,Christopher H. Hendon,Ruo Xi Yang,Aron Walsh,Maksym V. Kovalenko,Maksym V. Kovalenko +13 more
TL;DR: The compelling combination of enhanced optical properties and chemical robustness makes CsPbX3 nanocrystals appealing for optoelectronic applications, particularly for blue and green spectral regions (410–530 nm), where typical metal chalcogenide-based quantum dots suffer from photodegradation.
Journal ArticleDOI
Bright light-emitting diodes based on organometal halide perovskite
Zhi-Kuang Tan,Reza Saberi Moghaddam,May Ling Lai,Pablo Docampo,Ruben Higler,Felix Deschler,Michael Price,Aditya Sadhanala,Luis M. Pazos,Dan Credgington,Fabian C. Hanusch,Thomas Bein,Henry J. Snaith,Richard H. Friend +13 more
TL;DR: It is shown, using photoluminescence studies, that radiative bimolecular recombination is dominant at higher excitation densities, Hence, the quantum efficiencies of the perovskite light-emitting diodes increase at higher current densities.
Journal ArticleDOI
Quantum Dot Light-Emitting Diodes Based on Inorganic Perovskite Cesium Lead Halides (CsPbX3)
TL;DR: The demonstration of these novel quantum-dot light-emitting diodes based on all-inorganic perovskite CsPbX3 (X = Cl, Br, I) nanocrystals opens a new avenue toward designing optoelectronic devices, such as displays, photodetectors, solar cells, and lasers.
Journal ArticleDOI
Overcoming the electroluminescence efficiency limitations of perovskite light-emitting diodes.
Himchan Cho,Su Hun Jeong,Min-Ho Park,Young-Hoon Kim,Christoph Wolf,Chang-Lyoul Lee,Jin Hyuck Heo,Aditya Sadhanala,NoSoung Myoung,Seunghyup Yoo,Sang Hyuk Im,Richard H. Friend,Tae-Woo Lee +12 more
TL;DR: Efficient organic-inorganic perovskite light-emitting diodes were made with nanograin crystals that lack metallic lead, which helped to confine excitons and avoid their quenching.
Journal ArticleDOI
Quantum dot-induced phase stabilization of α-CsPbI3 perovskite for high-efficiency photovoltaics.
Abhishek Swarnkar,Abhishek Swarnkar,Ashley R. Marshall,Ashley R. Marshall,Erin M. Sanehira,Erin M. Sanehira,Boris D. Chernomordik,David T. Moore,Jeffrey A. Christians,Tamoghna Chakrabarti,Joseph M. Luther +10 more
TL;DR: N nanoscale phase stabilization of CsPbI3 quantum dots (QDs) to low temperatures that can be used as the active component of efficient optoelectronic devices and describe the formation of α-CsP bI3 QD films that are phase-stable for months in ambient air.