Planar Schottky photovoltaic devices were prepared from solution-processed PbS nanocrystal quantum dot films with aluminum and indium tin oxide contacts. These devices exhibited up to 4.2% infrared power conversion efficiency, which is a threefold
We report here simple planar, stackable PbS nanocrystal quantum dot photovoltaic devices with infrared power conversion efficiencies up to 4.2%. This represents a threefold improvement over the previous efficiencies obtained in
Apr 18, 2008· Figure 2.4: Absorption spectrum of a batch of colloidal PbS nanocrystals used in this work. The 1st and 2nd excitonic transition absorption peaks are clearly visible. (Nanocrystals were synthesized by Dr. L. Levina). - "Schottky-quantum dot photovoltaics for efficient infrared power conversion"
Dec 20, 2007· We elucidate experimentally a quantitative physical picture of the Schottky barrier formed at the junction between a metallic contact and a semiconducting colloidal quantum dot film. We used a combination of capacitance-voltage and temperature-dependent current-voltage measurements to extract the key parameters of the junction. Three differently processed
Jun 1, 2010· The resultant depleted-heterojunction solar cells provide a 5.1% AM1.5 power conversion efficiency. The devices employ infrared-bandgap size-effect-tuned PbS CQDs, enabling broadband harvesting of
Oct 3, 2011· Rapid advances have brought colloidal quantum dot photovoltaic solar power conversion efficiencies of 6% in the latest reports. These achievements represent important first steps toward
Planar Schottky photovoltaic devices were prepared from solution-processed PbS nanocrystal quantum dot films with aluminum and indium tin oxide contacts. These devices exhibited up to 4.2% infrared power conversion efficiency, which is a threefold improvement over previous results. Solar power conversion efficiency reached 1.8%.
Planar Schottky photovoltaic devices were prepared from solution-processed PbS nanocrystal quantum dot films with aluminum and indium tin oxide contacts. These devices exhibited up
PbS colloidal quantum dot photovoltaic devices in a Schottky architecture have demonstrated an infrared power conversion efficiency of 4.2%. Here, we elucidate the internal mechanisms leading to this efficiency.At relevant intensities, the drift length is
Stable solution-processed photovoltaic devices having 3.6% power conversion efficiency in the infrared are reported, and diffusion of electrons and holes over hundreds of nanometers through the PbSe colloidal quantum dot solid is chiefly responsible for the high external quantum efficiencies obtained in this new class of devices. Half of the sun''s power lies in the infrared.
Colloidal quantum dots (CQDs) are considered as next-generation semiconductors owing to their tunable optical and electrical properties depending on their particle size and shape. The characteristics of CQDs are mainly governed by their surface chemistry, and the ligand exchange process plays a crucial role in determining their surface states. Worldwide studies toward the
Schottky-quantum dot photovoltaics for efficient infrared power conversion . × Schottky-quantum dot photovoltaics for efficient infrared power conversion. andras pattantyus-abraham. 2008. See full PDF download Download PDF. Related papers
Schottky-quantum dot photovoltaics for efficient infrared power conversion. Article. Full-text available. These devices exhibited up to 4.2% infrared power conversion efficiency, which is a
Oct 18, 2008· Stable solution-processed photovoltaic devices having 3.6% power conversion efficiency in the infrared are reported, and diffusion of electrons and holes over hundreds of nanometers through the PbSe colloidal quantum dot solid is chiefly responsible for the high external quantum efficiencies obtained in this new class of devices.
Jan 29, 2021· Infrared (IR) solar cells are promising devices for significantly improving the power conversion efficiency of common solar cells by harvesting the low-energy IR photons. PbSe quantum dots (QDs) are superior IR photon absorbing materials due to their strong quantum confinement and thus strong interdot electronic coupling. However, the high chemical activity
Schottky-quantum dot photovoltaics for efficient infrared power conversion (PDF) Schottky-quantum dot photovoltaics for efficient infrared power conversion | Edward Sargent -
Mar 27, 2008· PbS colloidal quantum dot photovoltaic devices in a Schottky architecture have demonstrated an infrared power conversion efficiency of 4.2%. Here, we elucidate the internal mechanisms leading to
cess. In contrast, we have developed photovoltaic devices based on a Schottky barrier between a p-type PbS nanocrys-tal film and a low work function metal that achieved power conversion
Apr 16, 2020· Today, renewable technologies are becoming increasingly important for the world''s energy supply, and are accounting for around 4–6% (mainly including contribution of power capacities of wind 539 gigawatts, or GWs, solar photovoltaics (PVs) 422 GWs and biopower 122 GWs) in today''s energy consumption [1, 2].Among these, solar PVs are anticipated to be the
PbS colloidal quantum dot photovoltaic devices in a Schottky architecture have demonstrated an infrared power conversion efficiency of 4.2%. Here, we elucidate the internal mechanisms leading to this efficiency. At relevant intensities, the drift length is 10 μm for holes and 1 μm for electrons.
Mar 26, 2010· Stable solution-processed photovoltaic devices having 3.6% power conversion efficiency in the infrared are reported, and diffusion of electrons and holes over hundreds of nanometers through the PbSe colloidal quantum dot solid is chiefly responsible for the high external quantum efficiencies obtained in this new class of devices.
Feb 8, 2012· Schottky-quantum dot photovoltaics for efficient infrared power conversion. Article. Full-text available. These devices exhibited up to 4.2% infrared power conversion efficiency, which is a
Feb 3, 2017· Self-powered photodetectors based on PbS-quantum-dots/indium Schottky barrier diodes exhibit excellent repeatability and stability at a high frequency, and demonstrate high sensitivity in weak light illumination detection and low noise currents. Here we fabricate self-powered photodetectors based on PbS-quantum-dots/indium Schottky barrier diodes
Aug 7, 2017· Colloidal quantum dots (CQDs) have attracted attention as a next-generation of photovoltaics (PVs) capable of a tunable band gap and low-cost solution process. Understanding and controlling the surface of CQDs lead to the significant development in the performance of CQD PVs. Here we review recent progress in the realization of low-cost, efficient lead
Mar 26, 2010· (Figure Presented) The air stability and power conversion efficiency of solution-processed PbS quantum dot solar cells is dramatically improved by the insertion of 0.8 nm LiF between the PbS
Apr 18, 2008· Planar Schottky photovoltaic devices were prepared from solution-processed PbS nanocrystal quantum dot films with aluminum and indium tin oxide contacts. These devices
Schottky-quantum dot photovoltaics for efficient infrared power conversion (PDF) Schottky-quantum dot photovoltaics for efficient infrared power conversion | Edward Sargent - Academia Academia no longer supports Internet Explorer.
May 25, 2013· Schottky-quantum dot photovoltaics for efficient infrared power conversion. Article. Full-text available. These devices exhibited up to 4.2% infrared power conversion efficiency, which is a
Apr 18, 2008· PbS colloidal quantum dot photovoltaic devices in a Schottky architecture have demonstrated an infrared power conversion efficiency of 4.2%. Here, we elucidate the internal
Aug 15, 2012· Johnston, K. W. et al. Schottky-quantum dot photovoltaics for efficient infrared power conversion. Appl. Phys. Lett. 92, 151115 (2008). Article ADS CAS Google Scholar
Mar 27, 2008· PbS colloidal quantum dot photovoltaic devices in a Schottky architecture have demonstrated an infrared power conversion efficiency of 4.2%. Here, we elucidate the internal
May 25, 2014· Near-infrared PbS quantum dots (QDs) composed of earth-abundant elements 2 have emerged as promising candidates for photovoltaic applications because of a tunable energy bandgap that covers the
Jul 8, 2024· Hence, we achieve a highly efficient solid-state up-conversion device with 2.20% efficiency and low excitation intensity (10 mW cm−2) through a one-step solution method.
Aug 26, 2020· Solution-processed PbS quantum dot infrared laser with room-temperature tuneable emission in the optical telecommunications window. the p-SPLE treated CsPbI3 QD solar cell had an enhanced power conversion efficiency and improved stability. Schottky-quantum dot photovoltaics for efficient infrared power conversion. K. Johnston. Physics
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