Exploració per autor "Konstantatos, Gerasimos"
Ara es mostren els items 1-20 de 45
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Ag2ZnSnS4 Nanocrystals Expand the Availability of RoHS Compliant Colloidal Quantum Dots
Saha, Avijit; Figueroba, Alberto; Konstantatos, Gerasimos (ACS, 2020-02-06)
Article
Accés obertThe demonstration of the quantum confinement effect in colloidal quantum dots (QDs) has been extensively studied and exploited mainly in Pb and Cd chalcogenide systems. There has been an urgent need recently for ... -
Ag2ZnSnS4 Nanocrystals Expand the Availability of RoHS Compliant Colloidal Quantum Dots
Saha, Avijit; Figueroba, Alberto; Konstantatos, Gerasimos (ACS, 2020)
Article
Accés obertThe demonstration of the quantum confinement effect in colloidal quantum dots (QDs) has been extensively studied and exploited mainly in Pb and Cd chalcogenide systems. There has been an urgent need recently for the ... -
Ag2ZnSnS4–ZnS core–shell colloidal quantum dots: a near-infrared luminescent material based on environmentally friendly elements
Saha, Avijit; Konstantatos, Gerasimos (RSC, 2021-05-07)
Article
Accés obertLow cost, multinary colloidal quantum dots (QDs) based on environmentally friendly elements, with bright, narrow-width, tunable near-infrared (NIR) luminescence are promising alternatives to Cd and Pb chalcogenide QDs for ... -
Breaking the Open-Circuit Voltage Deficit Floor in PbS Quantum Dot Solar Cells through Synergistic Ligand and Architecture Engineering
Pradhan, Santanu; Stavrinadis, Alexandros; Gupta, Shuchi; Christodoulou, Sotirios; Konstantatos, Gerasimos (ACS, 2017-05-24)
Article
Accés obertTo realize the full potential of colloidal quantum dot (CQD) based solar cells, it is important to address the issue of large open-circuit voltage (VOC) deficit which is a major roadblock in reaching higher efficiencies. ... -
Cation Disorder and Local Structural Distortions in AgxBi1–xS2 Nanoparticles
Kesavan, Jagadesh Kopula; d’Acapito, Francesco; Scardi, Paolo; Stavrinadis, Alexandros; Akgul, Mehmet Zafer; Burgués-Ceballos, Ignasi; Konstantatos, Gerasimos; Boscherini, Federico (MDPI, 2020-02-12)
Article
Accés obertBy combining X-ray absorption fine structure and X-ray diffraction measurements with density functional and molecular dynamics simulations, we study the structure of a set of AgxBi1−xS2 nanoparticles, a materials system ... -
Cation disorder engineering yields AgBiS2 nanocrystals with enhanced optical absorption for efficient ultrathin solar cells
Wang, Yongjie; Kavanagh, Seán R.; Burgués-Ceballos, Ignasi; Walsh, Aron; Scanlon, David O.; Konstantatos, Gerasimos (Nature, 2022-02-14)
Article
Accés obertStrong optical absorption by a semiconductor is a highly desirable property for many optoelectronic and photovoltaic applications. The optimal thickness of a semiconductor absorber is primarily determined by its absorption ... -
Cation disorder engineering yields AgBiS2 nanocrystals with enhanced optical absorption for efficient ultrathin solar cells
Wang, Yongjie; Kavanagh R., Seán; Burgués-Ceballos, Ignasi; Walsh, Aron; Scanlon O., David; Konstantatos, Gerasimos (Springer Nature, 2022-03)
Article
Accés obertStrong optical absorption by a semiconductor is a highly desirable property for many optoelectronic and photovoltaic applications. The optimal thickness of a semiconductor absorber is primarily determined by its absorption ... -
Colloidal AgBiS2 nanocrystals with reduced recombination yield 6.4% power conversion efficiency in solution-processed solar cells
Burgués-Ceballos, Ignasi; Wang, Yongjie; Akgul, M. Zafer; Konstantatos, Gerasimos (Elsevier, 2020-05-28)
Article
Accés obertAgBiS2 nanocrystals have recently emerged as a RoHS compliant material for photovoltaics. This heavy-metal-free ternary chalcogenide can be prepared from earth-abundant precursors, is solution-processable and presents a ... -
Colloidal Quantum Dot Tandem Solar Cells Using CVD Graphene as An Atomically Thin Intermediate Recombination Layer
Bi, Yu; Pradhan, Santanu; Akgul, Mehmet Zafer; Gupta, Shuchi; Stavrinadis, Alexandros; Wang, Jianjun; Konstantatos, Gerasimos (ACS, 2018-06-28)
Article
Accés obertTwo-terminal tandem cell architectures are believed to be an effective way to further improve the power conversion efficiency in solution processed photovoltaics. To design an efficient tandem solar cell, two key issues ... -
Colloidal synthesis of lead-free Cs2TiBr6−xIx perovskite nanocrystals
Liga, Shanti Maria; Konstantatos, Gerasimos (RSC, 2021-08-06)
Article
Accés obertCesium titanium halide perovskites are novel lead-free optoelectronic materials that have attracted attention in the last two years for their application in solar cells with power conversion efficiencies reaching 3.3%. We ... -
Environmentally friendly AgBiS2 nanocrystal inks for efficient solar cells employing green solvent processing
Wang, Yongjie; Peng, Lucheng; Wang, Zhuoran; Konstantatos, Gerasimos (2022-06)
Article
Accés obertSilver bismuth sulfide nanocrystals (AgBiS2 NCs) are emerging absorber materials for low-cost solar cells, owing to their solution-processability, environmentally friendliness, earth abundance, and high absorption coefficients. ... -
High Efficiency Colloidal Quantum Dot Infrared Light Emitting Diodes via Engineering at the Supra-Nanocrystalline Level
Pradhan, Santanu; DiStasio, Francesco; Bi, Yu; Gupta, Shuchi; Christodoulou, Sotirios; Stavrinadis, Alexandros; Konstantatos, Gerasimos (Nature, 2018-12-03)
Article
Accés obertColloidal quantum dot (CQD) light-emitting diodes (LEDs) deliver a compelling performance in the visible, yet infrared CQD LEDs underperform their visible-emitting counterparts, largely due to their low photoluminescence ... -
High Open Circuit Voltage Solar Cells based on bright mixed-halide CsPbBrI2 Perovskite Nanocrystals Synthesized in Ambient Air Conditions
Christodoulou, Sotirios; Stasio, Francesco Di; Pradhan, Santanu; Stavrinadis, Alexandros; Konstantatos, Gerasimos (ACS, 2018-03-19)
Article
Accés obertLead halide perovskite nanocrystals (NCs) are currently emerging as one of the most interesting solution processed semiconductors since they possess high photoluminescence quantum yield (PLQY), and colour tunability through ... -
High-Efficiency Light-Emitting Diodes Based on Formamidinium Lead Bromide Nanocrystals and solution processed transport layers
Stasio, Francesco Di; Ramiro, Íñigo; Bi, Yu; Christodoulou, Sotirios; Stavrinadis, Alexandros; Konstantatos, Gerasimos (ACS, 2018-09-11)
Article
Accés obertPerovskite nanocrystal light-emitting diodes (LEDs) employing architecture comprising a ZnO nanoparticles electron-transport layer and a conjugated polymer hole-transport layer have been fabricated. The obtained LEDs ... -
Highly efficient, ultrathin, Cd-free kesterite solar cells in superstrate configuration enabled by band level tuning via Ag incorporation
Wang, Zhuoran; Wang, Yongjie; Konstantatos, Gerasimos (Elsevier, 2022-04-01)
Article
Accés obertKesterite, or Cu2ZnSn(S,Se)4 (CZTS) is promising in developing sustainable PV technology due to its earth-abundant, non-toxic composition. However, issues including instability of interface, high density of defects that ... -
Highly Sensitive, Encapsulated MoS2 Photodetector with Gate Controllable Gain and Speed
Kufer, Dominik; Konstantatos, Gerasimos (ACS, 2015-10-26)
Article
Accés restringit per política de l'editorialSemiconducting, two-dimensional molybdenum disulfide (MoS2) is considered a promising new material for highly sensitive photodetection, because of its atomically thin profile and favorable bandgap. However, reported ... -
Hybrid 2D-QD MoS2–PbSe quantum dot broadband photodetectors with high-sensitivity and room-temperature operation at 2.5 µm
Kundu, Biswajit; Özdemir, Onur; Dalmases Solé, Mariona; Konstantatos, Gerasimos; Kumar, Gaurav (2021-09-12)
Article
Accés obertBroadband infrared photodetectors have profound importance in diverse applications including security, gas sensing, bioimaging, spectroscopy for food quality, and recycling, just to name a few. Yet, these applications can ... -
Improved electronic coupling in hybrid organic–inorganic nanocomposites employing thiol-functionalized P3HT and bismuth sulfide nanocrystals
Martínez, Luis; Higuchi, S.; MacLachlan, A. J.; Stavrinadis, A.; Miller, N. C.; Diedenhofen, Silke L.; Bernechea, María; Sweetnam, S.; Nelson, J.; Haque, S. A.; Tajima, K.; Konstantatos, Gerasimos (Royal Society of Chemistry, 2014-06-19)
Article
Accés obertIn this study, we employ a thiol-functionalized polymer (P3HT-SH) as a leverage to tailor the nanomorphology and electronic coupling in polymer–nanocrystal composites for hybrid solar cells. The presence of the thiol ... -
InSb/InP core-shell colloidal quantum dots for sensitive and fast short-wave infrared photodetectors
Peng, Lucheng; Wang, Yongjie; Ren, Yurong; Wang, Zhuoran; Cao, Pengfei; Konstantatos, Gerasimos (2024-02-02)
Article
Accés obertColloidal quantum dot (CQD) technology is considered the main contender toward a low-cost high-performance optoelectronic technology platform for applications in the short-wave infrared (SWIR) to enable 3D imaging, LIDAR ... -
InSb/InP Core–Shell Colloidal Quantum Dots for Sensitive and Fast Short-Wave Infrared Photodetectors
Peng, Lucheng; Wang, Yongjie; Ren, Yurong; Wang, Zhuoran; Cao, Pengfei; Konstantatos, Gerasimos (2024-02-02)
Article
Accés obert