2021
DOI: 10.3390/en14010201
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Cost-efficient, Effect of Low-Quality PbI2 Purification to Enhance Performances of Perovskite Quantum Dots and Perovskite Solar Cells

Abstract: In modern society, high-quality material development and a large stable supply are key to perform frontier research and development. However, there are negative issues to address to utilize high-quality resources with a large stable supply for research, such as economic accessibility, commercialization, and so on. One of the cutting-edge research fields, perovskite-related research, usually requires high-quality chemicals with outstanding purity (>99%). We developed an economically feasible PbI2 precursor w… Show more

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Cited by 14 publications
(42 citation statements)
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“…The CsPbX 3 PQDs were synthesized according to previously reported procedures, with modifications [2,4,5,20]. In brief, Cs-oleate was mixed with 0.4 g of Cs 2 CO 3 , 20 mL of 1-ODE, and 1.25 mL of OA in a 50 mL three-neck flask under vacuum at 120 • C for 30 min with stirring.…”
Section: Synthesis and Purification Of Cspbx 3 (X = Br Or I) Pqdsmentioning
confidence: 99%
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“…The CsPbX 3 PQDs were synthesized according to previously reported procedures, with modifications [2,4,5,20]. In brief, Cs-oleate was mixed with 0.4 g of Cs 2 CO 3 , 20 mL of 1-ODE, and 1.25 mL of OA in a 50 mL three-neck flask under vacuum at 120 • C for 30 min with stirring.…”
Section: Synthesis and Purification Of Cspbx 3 (X = Br Or I) Pqdsmentioning
confidence: 99%
“…The absorbance of riboflavin and the PQDs was maintained at 0.1 for a 430 nm wavelength. The PLQY calculation was performed according to the literature [2,21] as follows:…”
Section: Measurement Of Photoluminescence Quantum Yield Of Pqdsmentioning
confidence: 99%
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“…The ABX 3 hybrid perovskites (A = MA + , FA + , and Cs + , where MA + : methylammonium, FA + : formamidinium, B = Pb 2+ and Sn 2+ , and X = Cl − , Br − , and I − ) with various dimensions (0D to 3D) have been widely studied for application to various optoelectronic devices, especially for boosting photoconversion efficiency of the perovskite-based solar cell up to 25.17% [1][2][3]. In the perovskite-based research field, using high-purity precursors is widely accepted among researchers for better photophysical properties such as high photoluminescence quantum yield (PLQY) for perovskite quantum dots (PQDs), high absorption cross-section, efficient charge separation, and advanced device performance [4][5][6]. To enhance the photoconversion efficiency, numerous strategies have been proposed but a major strategy is reducing photogenerated free carrier loss in the device [5][6][7].…”
Section: Introductionmentioning
confidence: 99%