Optical and surface morphological properties of triethylamine passivated lead sulphide nanoparticles

Navaneethan, M.; Nisha, K.D.; Ponnusamy, S.; Muthamizhchelvan, C.

doi:10.1016/j.matchemphys.2009.06.026

Cited by 37 publications

(19 citation statements)

References 28 publications

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“…A strategy to improve PV performance of solar cells is broaden the light harvesting to near infrared (NIR) region which has been widely utilized in quantum dots (QDs) sensitized solar cells [260] An example for this is PbS QDs that are characterized by a large excitonic Bohr radius~18 nm, a low bulk energy band gap of about 0.41 eV [261], which is tunable with size [262]. Recently, PbS QDs are reported as a co sensitizer together with CH 3 NH 3 PbI 3 in a heterojunction solar cell by Etgar et al [263] also Seok's group [264] however, the PCE was limited < 4%.…”

Section: Quantum Dotsmentioning

confidence: 99%

Advances in hole transport materials engineering for stable and efficient perovskite solar cells

et al. 2017

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This article reviews the various hole transporting materials (HTMs) used in perovskite solar cells (PSCs) in achieving high photo conversion efficiency (PCE) and operational stability. The PSCs are the latest development in solution processable solar cells offering PCE (~22%) on a par with that of practically deployed silicon and thin film solar cells. HTMs and electron transporting materials (ETMs) are important constituents in PSCs as they selectively transport charges within the device, influence photovoltaic parameters, determine device stability and also influence its cost. This article critically approaches role of structure, electrochemistry, and physical properties of varied of choice of HTMs categorized diversely as small and long polymers, organometallic, and inorganic on the photovoltaic parameters of PSCs conceived in various device configurations. Achievements in tailoring the properties of HTMs to best fit for PSCs are detailed; a well designed HTM suppresses carrier recombination by facilitating the passage of holes but blocking electrons at the HTM/perovskite interface. Moreover, in many PSCs the HTM acts as the first line of defense to external degrading factors such as humidity, oxygen and photon dose, the extent of which depends on its hydrophobicity, permeability, and density.

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Section: Quantum Dotsmentioning

confidence: 99%

Advances in hole transport materials engineering for stable and efficient perovskite solar cells

et al. 2017

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“…The lone pair of electrons in the nitrogen atom of TBA can be donated to the vacant orbital of the Ni 2+ in Ni(OH) 2 forming a coordination bond between the nitrogen and nickel atoms. 29 Under stirring, toluene is adsorbed onto the surface of the as-produced Ni(OH) 2 nanoparticles. A large quantity of bubbles or foam was observed at the beginning of reaction under stirring (see Fig.…”

Section: Resultsmentioning

confidence: 99%

Assembly of Ni(OH)<SUB>2</SUB> Nanoparticle Films on Aqueous Surfaces Induced by Small Amounts of Toluene, and the Study of Their Unmediated Electrocatalytic Oxidation Toward Some Small Biomolecules

Qi¹,

Zhou²,

Chen³

et al. 2012

j. nanosci. nanotech.

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A simple strategy for the preparation of a Ni(OH)2 nanoparticle film is described. Ni(OH)2 nanoparticles were synthesized in an aqueous solution of Ni2+ and tert-butylamine in the presence of small amounts of toluene, which induced the nanoparticles to assemble a thin film on the aqueous surface. The obtained Ni(OH)2 nanoparticle film was easily transferred onto the electrode surfaces and exhibited stable electrochemical performance. The electrochemical behavior of various small biomolecules, including cysteine, homocysteine, glutathione, histidine, glycine, cystine, methionine, lysine, aspartic acid, glutamic acid, phenylalanine, ascorbic acid, uric acid and dopamine, were studied at the Ni(OH)2 nanoparticle-film-modified electrode. The Ni(OH)2 nanoparticle film exhibits excellent direct, unmediated electrocatalysis toward the oxidation of cysteine, homocysteine and ascorbic acid in a pH 7.4 buffer solution with a low onset potential and a high oxidation signal. This behavior differs from many reports in which small organic molecules are electrocatalyzed indirectly by the Ni(OH)2/NiOOH redox couple in a strongly alkaline solution.

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“…In the previous reports, triethylamine (TEA) was used as a capping ligand for the synthesis of monodispersed CdS and PbS nanoparticles with a smaller size [15,16]. Hence, TEA was selected as a capping agent to synthesize the size-confined TiO 2 nanoparticles using wet chemical process.…”

Section: Introductionmentioning

confidence: 99%

Chemical synthesis of highly size-confined triethylamine-capped $$\hbox {TiO}_{2}$$ TiO 2 nanoparticles and its dye-sensitized solar cell performance

Prakash¹,

Navaneethan

Archana

et al. 2018

Bull Mater Sci

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TiO 2 nanoparticles were synthesized by a facile wet chemical synthesis using triethylamine (TEA) as a surface passivating agent. The role of TEA on the formation and functional properties of TiO 2 nanoparticles were investigated. Particle agglomeration was restricted and nanoparticle size was limited to 5 nm by passivating the amine molecule. Photoanodes were fabricated by spray deposition method using synthesized TiO 2 nanoparticles. The efficiency of 5.91% was obtained by the dye-sensitized solar cells.

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Optical and surface morphological properties of triethylamine passivated lead sulphide nanoparticles

Cited by 37 publications

References 28 publications

Advances in hole transport materials engineering for stable and efficient perovskite solar cells

Advances in hole transport materials engineering for stable and efficient perovskite solar cells

Assembly of Ni(OH)<SUB>2</SUB> Nanoparticle Films on Aqueous Surfaces Induced by Small Amounts of Toluene, and the Study of Their Unmediated Electrocatalytic Oxidation Toward Some Small Biomolecules

Chemical synthesis of highly size-confined triethylamine-capped $$\hbox {TiO}_{2}$$ TiO 2 nanoparticles and its dye-sensitized solar cell performance

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