Search Results - "Alarousu, Erkki"
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High-quality bulk hybrid perovskite single crystals within minutes by inverse temperature crystallization
Published in Nature communications (06-07-2015)“…Single crystals of methylammonium lead trihalide perovskites (MAPbX 3 ; MA=CH 3 NH 3 + , X=Br − or I − ) have shown remarkably low trap density and charge…”
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Low trap-state density and long carrier diffusion in organolead trihalide perovskite single crystals
Published in Science (American Association for the Advancement of Science) (30-01-2015)“…The fundamental properties and ultimate performance limits of organolead trihalide MAPbX3 (MA = CH3NH3+; X = Br– or I–) perovskites remain obscured by…”
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Intrinsic efficiency limits in low-bandgap non-fullerene acceptor organic solar cells
Published in Nature materials (01-03-2021)“…In bulk heterojunction (BHJ) organic solar cells (OSCs) both the electron affinity (EA) and ionization energy (IE) offsets at the donor–acceptor interface…”
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4
Ultralow Self-Doping in Two-dimensional Hybrid Perovskite Single Crystals
Published in Nano letters (09-08-2017)“…Unintentional self-doping in semiconductors through shallow defects is detrimental to optoelectronic device performance. It adversely affects junction…”
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Heterovalent Dopant Incorporation for Bandgap and Type Engineering of Perovskite Crystals
Published in The journal of physical chemistry letters (21-01-2016)“…Controllable doping of semiconductors is a fundamental technological requirement for electronic and optoelectronic devices. As intrinsic semiconductors, hybrid…”
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Harnessing structural darkness in the visible and infrared wavelengths for a new source of light
Published in Nature nanotechnology (01-01-2016)“…Engineering broadband light absorbers is crucial to many applications, including energy-harvesting devices and optical interconnects. The performances of an…”
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Air-Stable Surface-Passivated Perovskite Quantum Dots for Ultra-Robust, Single- and Two-Photon-Induced Amplified Spontaneous Emission
Published in The journal of physical chemistry letters (17-12-2015)“…We demonstrate ultra-air- and photostable CsPbBr3 quantum dots (QDs) by using an inorganic–organic hybrid ion pair as the capping ligand. This passivation…”
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8
Solution-Grown Monocrystalline Hybrid Perovskite Films for Hole-Transporter-Free Solar Cells
Published in Advanced materials (Weinheim) (01-05-2016)“…High‐quality perovskite monocrystalline films are successfully grown through cavitation‐triggered asymmetric crystallization. These films enable a simple cell…”
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Engineering of CH3NH3PbI3 Perovskite Crystals by Alloying Large Organic Cations for Enhanced Thermal Stability and Transport Properties
Published in Angewandte Chemie International Edition (26-08-2016)“…The number of studies on organic–inorganic hybrid perovskites has soared in recent years. However, the majority of hybrid perovskites under investigation are…”
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Giant Photoluminescence Enhancement in CsPbCl3 Perovskite Nanocrystals by Simultaneous Dual-Surface Passivation
Published in ACS energy letters (12-10-2018)“…The presence of localized trap states on the surface of CsPbCl3 perovskite nanocrystals (NCs) is one of the greatest challenges precluding the development of…”
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Ligand-Free Nanocrystals of Highly Emissive Cs4PbBr6 Perovskite
Published in Journal of physical chemistry. C (22-03-2018)“…Although ligands of long carbon chains are very crucial to form stable colloidal perovskite nanocrystals (NCs), they create a severe barrier for efficient…”
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Tuning Solute‐Redistribution Dynamics for Scalable Fabrication of Colloidal Quantum‐Dot Optoelectronics
Published in Advanced materials (Weinheim) (01-08-2019)“…Solution‐processed colloidal quantum dots (CQDs) are attractive materials for the realization of low‐cost and efficient optoelectronic devices. Although…”
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13
The Surface of Hybrid Perovskite Crystals: A Boon or Bane
Published in ACS energy letters (14-04-2017)“…Hybrid perovskite single crystals have garnered tremendous research attention and are expected to be next-generation materials for high-efficiency photoactive…”
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Photophysics of Organometallic Platinum(II) Derivatives of the Diketopyrrolopyrrole Chromophore
Published in The journal of physical chemistry. A, Molecules, spectroscopy, kinetics, environment, & general theory (18-12-2014)“…A pair of diketopyrrolopyrrole (DPP) chromophores that are end-functionalized with platinum containing “auxochromes” were subjected to electrochemical and…”
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Temperature-Induced Lattice Relaxation of Perovskite Crystal Enhances Optoelectronic Properties and Solar Cell Performance
Published in The journal of physical chemistry letters (05-01-2017)“…Hybrid organic–inorganic perovskite crystals have recently become one of the most important classes of photoactive materials in the solar cell and…”
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Facile Synthesis and High Performance of a New Carbazole-Based Hole-Transporting Material for Hybrid Perovskite Solar Cells
Published in ACS photonics (15-07-2015)“…Perovskite solar cells are very promising for practical applications owing to their rapidly rising power conversion efficiency and low cost of solution-based…”
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Direct Femtosecond Observation of Charge Carrier Recombination in Ternary Semiconductor Nanocrystals: The Effect of Composition and Shelling
Published in Journal of physical chemistry. C (12-02-2015)“…Heavy-metal free ternary semiconductor nanocrystals are emerging as key materials in photoactive applications. However, the relative abundance of intra-bandgap…”
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A Layer-by-Layer ZnO Nanoparticle-PbS Quantum Dot Self-Assembly Platform for Ultrafast Interfacial Electron Injection
Published in Small (Weinheim an der Bergstrasse, Germany) (07-01-2015)“…Absorbent layers of semiconductor quantum dots (QDs) are now used as material platforms for low‐cost, high‐performance solar cells. The semiconductor metal…”
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Real-Time Observation of Ultrafast Intraband Relaxation and Exciton Multiplication in PbS Quantum Dots
Published in ACS photonics (19-03-2014)“…We examine ultrafast intraconduction band relaxation and multiple-exciton generation (MEG) in PbS quantum dots (QDs) using transient absorption spectroscopy…”
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Optical coherence tomography as an accurate inspection and quality evaluation technique in paper industry
Published in Optical review (01-05-2010)“…Optical coherence tomography (OCT), a technique for the noninvasive imaging of turbid media, based on low-coherence interferometry, was originally developed…”
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