Yuan, Mingjian Kemp, Kyle W. Thon, Susanna M. Kim, Jin Young Chou, Kang Wei Amassian, Aram Sargent, Edward H. 2024-01-20T09:33:13Z 2024-01-20T09:33:13Z 2021-09-04 2014-06-04 0935-9648 https://pubs.kist.re.kr/handle/201004/126699 An elemental-sulfur-based synthesis is reported, which, combined with processing to improve the size dispersion and passivation, results in a low-cost high-quality platform for small-bandgap PbS-CQD-based devices. Size-selective precipitation and cadmium chloride passivation are used to improve the power conversion efficiency of 1 eV bandgap CQD photovoltaic devices dramatically, which leads to record power conversion efficiency for a 1 eV PbS CQD solar cell of 5.4%. English WILEY-V C H VERLAG GMBH SOLAR-CELLS PBS NANOCRYSTALS PHOTOVOLTAICS RECOMBINATION PHOTOCURRENT PASSIVATION DIFFUSION EMISSION High-Performance Quantum-Dot Solids via Elemental Sulfur Synthesis Article 10.1002/adma.201305912 1 ADVANCED MATERIALS, v.26, no.21, pp.3513 - 3519 ADVANCED MATERIALS 26 21 3513 3519 scie scopus 000337696900021 2-s2.0-84901934482 Chemistry, Multidisciplinary Chemistry, Physical Nanoscience & Nanotechnology Materials Science, Multidisciplinary Physics, Applied Physics, Condensed Matter Chemistry Science & Technology - Other Topics Materials Science Physics Article SOLAR-CELLS PBS NANOCRYSTALS PHOTOVOLTAICS RECOMBINATION PHOTOCURRENT PASSIVATION DIFFUSION EMISSION colloidal quantum dots depleted heterojunctions PbS photovoltaics synthesis