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008			150430e2021 pr a fq d 00 0 eng d
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041			_2spa
049			_aevl
082			_223 _aT 621.31244 _bM553s CD
092	0		_223 _aT 621.31244 _bM553s CD
100	1		_aMercado Morales, Carolina _9298374
245	1	0	_aSnSe quantum dot-based dye-sensitized solar cell / _h[electronic resource] _cby Carolina Mercado-Morales.
260			_c2021.
300			_a1 disco de computadora ([11], 44 leaves) ; _c4¾ pulgadas (11.5 centímetros)
336			_2rdacontent _btxt _atexto
337			_2rdamedia _bc _acomputer
338			_2rdacarrier _bcd _acomputer disc
502			_aThesis (Master in Science- Chemistry) -- Pontificia Universidad Católica de Puerto Rico, 2021.
504			_aBibliographical references : leaves 42-44.
520	3		_aQuantum dots (QDs) are nanoparticles of semiconductor materials with a diameter of 1-10 nm and have applications in photovoltaic devices (PV). QDs are considered a promising third-generation photovoltaic device sensitizer because of tuneable band gap energy controlling by particle size, and high light absorption. Quantum dots Dye-sensitized solar cells (QDSSCs) are an emerging solar cell technology that use low cost, ecofriendly materials, and have been reported with an efficiency energy conversion of 44%. For the synthesis of QDs, capping agents perform an important function on shape, optical, and electronic properties on QDs formation and also avoids agglomeration. Tin selenide (SnSe) QDs have excellent optoelectronics properties which allows them to absorb all visible light. SnSe QDs have been study to a lesser extent and have been used primarily as counter electrode in QDSSCs. Thioglycolic acid (TGA) is used as capping agent in the synthesis of SnSe QDs which forms a complex between his carboxylic acid and thiol compounds. Glycerol is considered a green capping agent because of its non-toxicity and less expensive material, which can also form complex between its three alcohol groups. The aim of this study is to evaluate TGA, Glycerol, and Glycerol/TGA 1:1 mixture as capping agent in the synthesis of SnSe QDs to be used in QDSSCs. Since the annealing temperature of the n-type TiO2 semiconductor (QDSSCs photoanode) contributes to surface morphology and electronic properties, the temperatures of 350, 400 and 450°C were evaluated.
538			_aDisc characteristics : CD-ROM.
538			_aSystem requirements : PC, CD-ROM reader and Adobe Acrobat Reader.
610	2	7	_9294920 _aPontificia Universidad Católica de Puerto Rico _xDissertations. _2Local
650		0	_aSolar cells _xResearch _zPuerto Rico _9298375
710	2		_aPontificia Universidad Católica de Puerto Rico. _bColegio de Ciencias. _bDepartamento de Química _9294919
942			_2ddc _c3 _e23 _hT 621.31244 _iM553s _mCD _n0
999			_c296425 _d296425