Publications

2021

Single-Particle Spectroscopy as a Versatile Tool to Explore Lower-Dimensional Structures of Inorganic Perovskite

Riya Bose, Xiaohe Zhou, Tianle Guo, Haoze Yang, Jun Yin, Aditya Mishra, Jason D. Slinker, Osman M. Bakr, Omar F. Mohammed, and Anton V. Malko

ACS Energy Lett. 2021, 6, 10, 3695–3708`


Single photon sources with near unity collection efficiencies by deterministic placement of quantum dots in nanoantennas

H. Abudayyeh, B. Lubotzky, A. Blake, J. Wang, S. Majumder, Z. Hu, Y. Kim, H. Htoon, R. Bose, A. V. Malko, J. A. Hollingsworth, R. Rapaport


Journal of Physical Chemistry Letters Perspective and Cover Article:

Gentle Materials Need Gentle Fabrication: Encapsulation of Perovskites by Gas-Phase Alumina Deposition

R. Bose, J. Yin, Y. Zheng, C. Yang, Y. N. Gartstein, O. M. Bakr, A. V. Malko, O. F. Mohammed


PbS/CdS Quantum Dot Room-Temperature Single-Emitter Spectroscopy Reaches the Telecom O and S Bands via an Engineered Stability

S. Krishnamurthy, A. Singh, Z. Hu, A. V. Blake, Y. Kim, A. Sing, E. Dolgopolova, D. J. Williams, A. Piryatinksi, A. V. Malko, H. Htoon, M. Sykora, and J. A. Hollingsworth


2020

Light Propagation and Radiative Exciton Transport in Two-Dimensional Layered Perovskite Microwires

Y. Zheng, R. Naphade, N. Mondal, O. M. Bakr, O. F. Mohammed, Y. N. Gartstein, A. V. Malko


Interface Matters: Enhanced Photoluminescence and Long-Term Stability of Zero-Dimensional Cesium Lead Bromide Nanocrystals via Gas-Phase Aluminum Oxide Encapsulation

R. Bose, Y. Zheng, T. Guo, J. Yin, M. N. Hedhili, X. Zhou, J.-F. Veyan, I. Gereige, A. Al-Saggaf, Y. N. Gartstein, O. M. Bakr, O. F. Mohammed, A. V. Malko


Correlation of Photoluminescence and Structural Morphologies at the Individual Nanoparticle Level

L. Gutiérrez-Arzaluz, G. H. Ahmed, H. Yang, S. Shikin, O. M. Bakr, A. V. Malko, O. F. Mohammed


Fluorescence Enhancement in the Solid State by Isolating Perylene Fluorophores in Metal–Organic Frameworks

J. Li, S. Yuan, J.-S. Qin, L. Huang,R. Bose, J. Pang, P. Zhang,Z. Xiao, K. Tan,. A. V. Malko, T. Cagin, H.-C. Zhou


Dynamical Interconversion between Excitons and Geminate Charge Pairs in Two-Dimensional Perovskite Layers Described by the Onsager–Braun Model

N. Mondal, R. Naphade, X. Zhou, Y. Zheng, K. Lee, I. Gereige, A. Al-Saggaf, O. Bakr, O. Mohammed, Y. Gartstein, A. V. Malko


2019

Intrinsic exciton photophysics of lead salt nanocrystals revealed by low-temperature single dot spectroscopy

Z. Hu, Y. Kim, S. Krishnamurthy, I. D. Avdeev, M. O. Nestoklon, S. V. Goupalov, A. Singh, A. V. Malko, J. A. Hollingsworth, H. Htoon


Emergence of Multiple Fluorophores in Individual Cesium Lead Bromide Nanocrystals

Yuhai Zhang, Tianle Guo, Haoze Yang, Riya Bose, Lingmei Liu, Jun Yin, Yu Han, Osman M. Bakr, Omar F. Mohammed & Anton V. Malko


Metal Halide Perovskite Nanosheets for X-ray High-Resolution Scintillation Imaging Screens

Y. Zhang, R. Sun, X. Ou, K. Fu, Q. Chen, Y. Ding, L. Xu, L. Liu, Y. Han, A. V. Malko, X. Liu, H. Yang, O. M. Bakr, H. Liu, O. F. Mohammed


2018

Engineering Multilayered Nanocrystal Solids with Enhanced Optical Properties Using Metal Oxides for Photonic Applications

R. Bose, A. Dangerfield, S. M. Rupich, T. Guo, Y. Zheng, S. Kwoon, M. J. Kim, Y. N. Gartstein, A. Esteve, Y. J. Chabal and A. V. Malko



Efficient photon recycling and radiation trapping in cesium lead halide perovskite waveguides

I. Dursun, Y. Zheng, T. Guo, M. de Bastiani, B. Turedi, L. Sinatra, Md. A. Haque, B. Sun, A. A. Zhumekenov, M. Saidaminov, G. de Arquer, F. Pelayo, E. Sargent, T. Wu, Y. N. Gartstein, O. M. Bakr, O. F. Mohammed and A. V. Malko


2017

Biexciton and Trion Energy Transfer from CdSe/CdS Giant Nanocrystals to Si Substrates

T. Guo, S. Sampat, S. M. Rupich, J. A. Hollingsworth, M. Buck, H. Htoon, Y. J. Chabal, Yu. N. Gartstein, and A. V. Malko



Ultralong Radiative States in Hybrid Perovskite Crystals: Compositions for Submillimeter Diffusion Length

E. Alarousu, A. M. El-Zohry, J. Yin, A. A. Zhumekenov, C. Yang, E. Elhabshi, I. Gereige, A. AlSaggaf , A. Malko, O. M. Bakr and O. F. Mohammed


Giant PbSe/CdSe/CdSe Quantum Dots: Crystal Structure-limited Ultrastable Near-infrared Photoluminescence from Single Nanocrystals

C. J. Hanson, N. F. Hartmann, A. Singh, X. Ma, W. J. I. DeBenedetti, J. L. Casson, J. K. Grey, Y. J. Chabal, A. V. Malko, M. Sykora, A. Piryatinksi, H. Htoon, and J. A. Hollingsworth


Oxide-related defects in quantum dot containing Si-rich silicon nitride films

L. A. Walsh, S. Mohammed, S. C. Sampat, Y. J. Chabal, A. V. Malko, C. L. Hinkle


Energy Transfer from Colloidal Nanocrystals to Strongly Absorbing Perovskites

Y. Cabrera, S. M. Rupich, R. Shaw, B. Anand, M. de Anda Villa, R. Rahman, A. Dangerfield, Y. N. Gartstein, A. V. Malko, and Y. J. Chabal


Understanding the Superior Temperature Stability of Iridium Light-Emitting Electrochemical Cells

M. H. Bowler, T. Guo, L. D. Bastatas, M. D. Moore, A. V. Malko and J. D. Slinker


Using shape to turn off blinking for two-colour multiexciton emission in CdSe/CdS tetrapods

C. N. Mishra, N. J. Orfield,  F. Wang, Z. Hu, S. Krishnamurthy, A. V. Malko, J. L. Casson, H. Htoon, M. Sykora, J. A. Hollingsworth


Order of magnitude enhancement of monolayer MoS2 photoluminescence due to near-field energy influx from nanocrystal films

T. Guo, S. Sampat, K. Zhang, J. A. Robinson, S. M. Rupich, Y. J. Chabal, Yu. N. Gartstein, and A. V. Malko


2016

Quantitative Analyses of Competing Photocurrent Generation Mechanisms in Fullerene-Based Organic Photovoltaics

L. Xu, J. Wang, M. De Anda Villa, T. Daunis, Y.-J. Lee, A. V. Malko, and J. W. P. Hsu


Broadband transient absorption study of photoexcitations in lead halide perovskites: towards a multi-band picture

B. Anand, S. Sampat, E. Danilov, W. Peng, S. M. Rupich, Y. N. Gartstein, Y. J. Chabal and A. V. Malko


Exciton and Trion Energy Transfer from Giant Semiconductor Nanocrystals to MoS2 Monolayers

S. Sampat, T. Guo, K. Zhang, J. Robinson, H. Htoon, J. A. Hollingsworth, Y. N. Gartstein and A. V. Malko



Influence of growth temperature on bulk and surface defects in hybrid lead halide perovskite films

W. Peng, B. Anand, L. Liu, S. Sampat, B. E. Bearden, A. V. Malko and Y. J. Chabal


2015

Effects of Contact-induced Doping on the Behaviors of Organic Photovoltaic Devices

J. Wang, L. Xu, Y.-J. Lee, M. De Anda Villa, A. V. Malko and J. W. P. Hsu


Multistate blinking and scaling of the recombination rates in individual silica-coated CdSe/CdS nanocrystals

S. Sampat, N. S. Karan, T. Guo, H. Htoon, J. A. Hollingsworth, and A. V. Malko


Silicon surface modification and characterization for emergent photovoltaic applications based on energy transfer

W. Peng, S. M. Rupich, N. Shafiq, Y. N. Gartstein, A. V. Malko, and Y. J. Chabal


Hybrid light sensor based on ultrathin Si nanomembranes sensitized with CdSe/ZnS colloidal nanocrystal quantum dots

W. Peng, S. Sampat, S. M. Rupich, B. Anand, H. M. Nguyen, D. Taylor, B. E. Beardon, Y. N. Gartstein, Y. J. Chabal and A. V. Malko


Plasmonic Giant Quantum Dots: Hybrid Semiconductor-Metal Nanostructures for Truly Simultaneous Optical Imaging, Photothermal Effect and Thermometry

N. S. Karan, A. M. Keller, S. Sampat, O. Roslyak, A. Arefin, C. J. Hanson, J. L. Casson, A. Desireddy, A. Piryatinski, R. Iyer, H. Htoon, A. Malko and J. A. Hollingsworth


Plasmonic Giant Quantum Dots: Hybrid Semiconductor-Metal Nanostructures for Truly Simultaneous Optical Imaging, Photothermal Effect and Thermometry

N. S. Karan, A. M. Keller, S. Sampat, O. Roslyak, A. Arefin, C. J. Hanson, J. L. Casson, A. Desireddy, A. Piryatinski, R. Iyer, H. Htoon, A. Malko and J. A. Hollingsworth

Chem. Science, 6, 2224-2236 (2015); doi: 10.1039/C5SC00020C

Tunable Charge Transfer Dynamics at Tetracene/LiF/C60 Interfaces

S. Sampat, A. D. Mohite, B. Crone, S. Tretiak, A. V. Malko, A. J. Taylor, and D. A. Yarotski

J. Phys. Chem. C 119 (3), 1286–1290 (2015); doi: 10.1021/jp5095905

2014

Efficient directed energy transfer through size-gradient nanocrystal layers into Silicon substrates

W. J. I. DeBenedetti, M. T. Nimmo, S. M. Rupich, L. M. Caillard, Yu. N. Gartstein, Y. J. Chabal, and A. V. Malko

Advanced Functional Materials, 24, 5002–5010

Influence of the Core Size on Biexciton Quantum Yield of Giant CdSe/CdS Nanocrystals

B. D. Mangum, S. Sampat, Y. Ghosh, J. A. Hollingsworth, H. Htoon, and A. V. Malko

Nanoscale, 6 (7), 3712 – 3720

Chemical bonding and defect states of LPCVD grown silicon-rich Si3N4 for quantum dot applications

S. Mohammed, M. T. Nimmo, A. V. Malko and C. L. Hinkle

J. Vac. Sci. Technol. A 32, 021507

2013

Energy Transfer from Colloidal Nanocrystals into Si Substrates Studied via Photoluminescence Photon Counts and Decay Kinetics

H. M. Nguyen, O. Seitz, Yu. N. Gartstein, Y. J. Chabal, and A. V. Malko

J. Opt. Soc. Am. B 30 (9), 2401-2408

Anisotropic optical properties of thin-film thiacarbocianine dye aggregates

K. Roodenko, H. M. Nguye, L. Caillard, A. Radja, P. Thissen, J. M. Gordon, Yu. N. Gartstein, A. V. Malko, and Y. J. Chabal

J. Phys. Chem. C 117, 20186-20192

Visible to Near Infrared Sensitization of Silicon Substrates via Energy Transfer from Proximal Nanocrystals: Further Insights for Hybrid Photovoltaics

M. T. Nimmo, L. M. Caillard, W. De Benedetti, H. M. Nguyen, O. Seitz, Y. N. Gartstein, Y. J. Chabal and A. V. Malko

ACS Nano 7, 3236-3245 (2013) 

Effect of Plasmonic Au Nanoparticles on Inverted Organic Solar Cell Performance

J. Wang, Y.-J. Lee, A. S. Chadha, J. Yi, M. L. Jespersen, J. J. Kelley, H. M. Nguyen, M. Nimmo, A. V. Malko, R. A. Vaia, W. Zhou and J. W. P. Hsu

J. Phys. Chem. C 117, 85-91 (2013)

2012

Efficient Radiative and Nonradiative Energy Transfer from Proximal CdSe/ZnS Nanocrystals into Silicon Nanomembranes

H. M. Nguyen, O. Seitz, W. Peng, Y. N. Gartstein, Y. J. Chabal, and A. V. Malko

ACS Nano 6, 5574-5582

Unique Challenges Accompany Thick-Shell CdSe/nCdS (n ≥ 10) Nanocrystal Synthesis

Y. Guo, K. Marchuk, R. Abraham, S. Sampat, N. Fang, A. Malko, J. Vela

J. Phys. Chem. C 116, 2791

Optimizing non-radiative energy transfer in hybrid colloidal-nanocrystal/silicon structures by controlled nanopillar architectures for future photovoltaic cells

O. Seitz, L. Caillard, H. M. Nguyen, C. Chiles, Y. J. Chabal and A. V. Malko

Applied Physics Letters 100, 021902 (2012)

2011

Pump-Intensity- and Shell-Thickness-Dependent Evolution of Photoluminescence Blinking in Individual Core/Shell CdSe/CdS Nanocrystals

Malko, A. V.; Park, Y.-S.; Sampat, S.; Galland, C.; Vela, J.; Chen, Y.; Hollingsworth, J. A.; Klimov, V. I.; and Htoon. H

Nano Letters 11, 5213

Near-unity quantum yield of biexciton emission from individual CdSe/CdS nanocrystals measured by two photon photoluminescence spectroscopy

Y-S. Park, A. V. Malko, J. Vela, Y. Chen, Y. Ghosh, F. Garcia-Santamaria, J. A. Hollingsworth, V. I. Klimov, and H. Htoon

Physical Review Letters 106, 187401

Spectroscopic evidence for nonradiative energy transfer between colloidal CdSe/ZnS nanocrystals and functionalized silicon substrates

H. M. Nguyen, O. Seitz, D. Aureau, A. Sra, N. Nijem, Yu. N. Gartstein, Y. J. Chabal, and A. V. Malko

Applied Physics Letters, 98, 161904

2010 and Prior

Highly emissive multiexcitons in steady-state photoluminescence of individual “Giant” CdSe/CdS core/shell nanocrystals

H. Htoon, A. V. Malko, D. A. Bussian, J. Vela, Y. Chen, J. A. Hollingsworth, and V. I. Klimov

Nano Letters, 10(7), 2401-2407 (2010)

Quantum Optics with Nanocrystal Quantum Dots in Solution: Quantitative Study of Clustering

D. A. Bussian, A. V. Malko, H. Htoon, Y. Chen, J. A. Hollingsworth, and V. I. Klimov

Journal of Phys. Chem. C 113(6), 2241 (2009)

Excited excitonic states observed in semiconductor quantum dots using polarization resolved optical spectroscopy

V. Troncale, K. F. Karlsson, D. Y. Oberli, M. Byszewski, A. Malko, E. Pelucchi, A. Rudra and E. Kapon

Journal of Applied Physics 101, 081703 (2007)

Optical polarization anisotropy and hole states in a pyramidal quantum dot system

K. F. Karlsson, V. Troncale, D. Y. Oberli, A. Malko, E. Pelucchi, A. Rudra and E. Kapon

Applied Physics Letters 89, 251113 (2006)

Time-resolved cathodoluminescence of InGaAs/AlGaAs tetrahedral pyramidal quantum structures

M. Merano, S. Sonderegger, A. Crottini, S. Collin, E. Pelucchi, P. Renucci, A. Malko, M. H. Baier, E. Kapon, J-D. Ganière, and B. Deveaud

Applied Physics B – Lasers and Optics 84, 343 (2006)

Quantum dot exciton dynamics probed by photon correlation spectroscopy

M. H. Baier, A. Malko, E. Pelucchi, D. Y. Oberli, and E. Kapon

Physical Review B 73, 205321 (2006)

Optimization of the efficiency of single photon sources based on quantum dots under optical excitation

A. Malko, M. H. Baier, K. F. Karlsson, E. Pelucchi, D. Y. Oberli, and E. Kapon

Applied Physics Letters 88, 081905 (2006)

Probing carrier dynamics in nanostructures by picosecond cathodoluminescence

M. Merano, S. Sonderegger, A. Crottini, S. Collin, P. Renucci, E. Pelucchi, A. Malko, M. H. Baier, E. Kapon, B. Deveaud, J-D. Ganière

Nature 438, 479 (2005).

Single photon emission from pyramidal quantum dots: The impact of hole thermalization on photon emission statistics

A. Malko, D. Y. Oberli, M. H. Baier, E. Pelucchi, F. Michelini, K. F. Karlsson, M.-A. Dupertuis, and E. Kapon

Physical Review B 72, 195332 (2005)

Patterning of confined-state energies in site-controlled semiconductor quantum dots

S. Watanabe, E. Pelucchi, K. Leifer, A. Malko, B. Dwir, and E. Kapon

Applied Physics Letters 86, 243105 (2005)

Ultrafast energy transfer between the (MLCT)-M-3 state of [Ru-II(dmb)(2)(bpy-an)](2+) and the covalently appended anthracene

J. R. Schoonover, D. M. Dattelbaum, A. Malko, V. I. Klimov, T. J. Meyer, D. J. Styers-Barnett, E. Z. Gannon, J. C. Granger, W. S. Aldridge, J. M. Papanikolas

Journal of Phys. Chem. A 109, 2472 (2005)

Correlated photon emission from semiconductor quantum dots grown in inverted pyramids

A. Malko, M. H. Baier, E. Pelucchi, D. Chek-al-kar, D. Y. Oberli, and E. Kapon

Physica E–Low-Dimensional Systems &        Nanostructures 26 (1-4), 194 (2005)

Localization of excitons in quantum wires demonstrated by photon correlation spectroscopy

A. Malko, M. H. Baier, E. Pelucchi, D. Y. Oberli, K. Leifer, D. Chek-al-kar, and E. Kapon

Applied Physics Letters 85, 5715 (2004)

Site- and Energy-Controlled Pyramidal Quantum Dot Heterostructures

E. Kapon, E. Pelucchi, S. Watanabe, A. Malko, M. H. Baier, K. Leifer, B. Dwir, F. Michelini, and M.-A. Dupertuis

Physica E–Low-Dimensional Systems & Nanostructures, 25 (2-3), 288 (2004)

Interplay between optical gain and photoinduced absorption in CdSe nanocrystals

A. Malko, A. Mikhailovsky, J. Hollingsworth, M. Petruska, and V. Klimov

Journal of Phys. Chem. B 108, 5250 (2004)

High performance, quantum dot nanocomposites for nonlinear optical and optical gain applications

M. Petruska, A. Malko, P. Voyles, and V. Klimov

Advanced Materials 15, (7-8), 610 (2003)

Light amplification in semiconductor nanocrystals: Quantum rods versus quantum dots

H. Htoon, J. Hollingsworth, A. Malko, R. Dickerson, and V. Klimov

Applied Physics Letters 82, 4776 (2003)

From amplified spontaneous emission to microring lasing using nanocrystal quantum dot solids

A. Malko, A. Mikhailovsky, M. Petruska, J. Hollingsworth, H. Htoon, M. Bawendi, and V.  Klimov

Applied Physics Letters 81, 1303 (2002)

Multiparticle interactions and stimulated emission in chemically-synthesized quantum dots

A. Mikhailovsky, A. Malko, J. Hollingsworth, S. Xu, M. Bawendi, and V. Klimov

Applied Physics Letters 80, 2380 (2002)

Ultrafast dynamic holography in nanocrystal solids

B. Kraabel, A. Malko, J. Hollingsworth, and V. Klimov

Applied Physics Letters 78, 1814 (2001)

Optical gain and stimulated emission in nanocrystal quantum dot solids

V. Klimov, A. Mikhailovsky, S. Xu, A. Malko, J. Hollingsworth, D. McBranch, C. Leatherdale, H.-J. Eisler, and M. Bawendi

Science 290, 314 (2000).