Physics:Quantum dot solar cell - Revision history

WikiHarold: Remove imported red links from Quantum page

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	Another modern cell design is the dye-sensitized solar cell, or DSSC. DSSCs use a sponge-like layer of [[titanium dioxide\|{{chem\|TiO\|2}}]] as the semiconductor valve as well as a mechanical support structure. During construction, the sponge is filled with an organic dye, typically ruthenium-polypyridine, which injects electrons into the titanium dioxide upon photoexcitation.<ref>{{cite journal		Another modern cell design is the dye-sensitized solar cell, or DSSC. DSSCs use a sponge-like layer of [[titanium dioxide\|{{chem\|TiO\|2}}]] as the semiconductor valve as well as a mechanical support structure. During construction, the sponge is filled with an organic dye, typically ruthenium-polypyridine, which injects electrons into the titanium dioxide upon photoexcitation.<ref>{{cite journal
	\| author = B. O'Regan and M. Gratzel\|title = A low-cost, high efficiency solar cell based on dye-sensitized colloidal TiO<sub>2</sub> films\|journal = Nature\|issue = 6346\|year = 1991\|pages = 737–740\|doi = 10.1038/353737a0\|volume = 353\|bibcode=1991Natur.353..737O\| s2cid=4340159 }}</ref> This dye is relatively expensive, and ruthenium is a rare metal.<ref name="Emsley2011">{{cite book\|last1=Emsley\|first1=John\|title=Nature's Building Blocks: An A-Z Guide to the Elements\|url=~~{{google books \|plainurl=y \|id=4BAg769RfKoC \|p=368}}~~\|date=25 August 2011\|publisher=Oxford University Press\|isbn=978-0-19-960563-7 \|pages=368–370}}</ref>		\| author = B. O'Regan and M. Gratzel\|title = A low-cost, high efficiency solar cell based on dye-sensitized colloidal TiO<sub>2</sub> films\|journal = Nature\|issue = 6346\|year = 1991\|pages = 737–740\|doi = 10.1038/353737a0\|volume = 353\|bibcode=1991Natur.353..737O\| s2cid=4340159 }}</ref> This dye is relatively expensive, and ruthenium is a rare metal.<ref name="Emsley2011">{{cite book\|last1=Emsley\|first1=John\|title=Nature's Building Blocks: An A-Z Guide to the Elements\|url=\|date=25 August 2011\|publisher=Oxford University Press\|isbn=978-0-19-960563-7 \|pages=368–370}}</ref>

	Using quantum dots as an alternative to molecular dyes was considered from the earliest days of DSSC research. The ability to tune the bandgap allowed the designer to select a wider variety of materials for other portions of the cell. Collaborating groups from the University of Toronto and École Polytechnique Fédérale de Lausanne developed a design based on a rear electrode directly in contact with a film of quantum dots, eliminating the electrolyte and forming a depleted heterojunction. These cells reached 7.0% efficiency, better than the best solid-state DSSC devices, but below those based on liquid electrolytes.<ref name="hybrid"/>		Using quantum dots as an alternative to molecular dyes was considered from the earliest days of DSSC research. The ability to tune the bandgap allowed the designer to select a wider variety of materials for other portions of the cell. Collaborating groups from the University of Toronto and École Polytechnique Fédérale de Lausanne developed a design based on a rear electrode directly in contact with a film of quantum dots, eliminating the electrolyte and forming a depleted heterojunction. These cells reached 7.0% efficiency, better than the best solid-state DSSC devices, but below those based on liquid electrolytes.<ref name="hybrid"/>
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	*Berkeley Lab, [https://web.archive.org/web/20061031145807/http://www.lbl.gov/tt/techs/lbnl2116.html Berkeley Lab Air-stable Inorganic Nanocrystal Solar Cells Processed from Solution], 2005.		*Berkeley Lab, [https://web.archive.org/web/20061031145807/http://www.lbl.gov/tt/techs/lbnl2116.html Berkeley Lab Air-stable Inorganic Nanocrystal Solar Cells Processed from Solution], 2005.
	*ScienceDaily, [https://www.sciencedaily.com/releases/2005/10/051023122429.htm Sunny Future For Nanocrystal Solar Cells], October 23, 2005.		*ScienceDaily, [https://www.sciencedaily.com/releases/2005/10/051023122429.htm Sunny Future For Nanocrystal Solar Cells], October 23, 2005.

	~~{{Photovoltaics}}~~

	~~[[Category:Solar cells]]~~
	~~[[Category:Quantum dots]]~~
	~~[[Category:Quantum electronics]]~~

	{{Sourceattribution\|Quantum dot solar cell}}		{{Sourceattribution\|Quantum dot solar cell}}

WikiHarold: Clean Quantum page image and red links

2026-05-23T23:34:07Z

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WikiHarold: Use Quantum See also index module

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Use Quantum See also index module

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	== See also ==		== See also ==
	* [[Engineering:~~Third-generation photovoltaic cell~~\|~~Third-generation photovoltaic cell]]~~		{{#invoke:PhysicsQC\|tocHeadingAndList\|Physics:Quantum basics/See also}}
	* [[Physics:Nanocrystalline silicon\|Nanocrystalline silicon]]
	* [[Physics:Nanoparticle\|Nanoparticle]]
	* [[Chemistry:Photoelectrochemical cell\|~~Photoelectrochemical cell]]~~
	* [[Physics:~~Organic solar cell\|Organic solar cell]]~~

	==References==		==References==

Harold: Restore Quantum article header template

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 {{Short description|Type of solar cell based on quantum dot devices}}
 A '''quantum dot solar cell''' ('''QDSC''') is a [[Physics:Solar cell|solar cell]] design that uses [[Physics:Quantum dot|quantum dot]]s as the captivating photovoltaic material. It attempts to replace bulk materials such as [[Chemistry:Silicon|silicon]], [[Chemistry:Copper indium gallium selenide|copper indium gallium selenide]] ([[Physics:Copper indium gallium selenide solar cells|CIGS]]) or [[Chemistry:Cadmium telluride|cadmium telluride]] ([[Physics:Cadmium telluride photovoltaics|CdTe]]). Quantum dots have bandgaps that are adjustable across a wide range of energy levels by changing their size. In bulk materials, the bandgap is fixed by the choice of material(s).<ref>{{Cite journal |last1=Shishodia |first1=Shubham |last2=Chouchene |first2=Bilel |last3=Gries |first3=Thomas |last4=Schneider |first4=Raphaël |date=2023-10-31 |title=Selected I-III-VI2 Semiconductors: Synthesis, Properties and Applications in Photovoltaic Cells |journal=Nanomaterials |language=en |volume=13 |issue=21 |page=2889 |doi=10.3390/nano13212889 |issn=2079-4991 |doi-access=free |pmid=37947733 |pmc=10648425 }}</ref> This property makes quantum dots attractive for multi-junction solar cells, where a variety of materials are used to improve efficiency by harvesting multiple portions of the solar spectrum.<ref>{{cite journal
 |last1=Shishodia |first1=Shubham |last2=Rinnert |first2=Herve
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 Typical quantum dots solar cells consist of a glass substrate followed by a transparent electrically conducting indium tin oxide(ITO) that allows light to penetrate the solar cell. It also contains a conducting polymer, poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS), to enroll as electron blocker and hole injector to the ITO layer. Finally, quantum dots(QDs) such as cadmium selenide along with poly(3-hexylthiophene) (P3HT) are used between the metal cathode and the conductive polymer layer to ensure optimal function.<ref>{{Cite journal |last1=Jabbour |first1=Ghassan E. |last2=Doderer |first2=David |date=September 2010 |title=The best of both worlds |url=https://www.nature.com/articles/nphoton.2010.209 |journal=Nature Photonics |language=en |volume=4 |issue=9 |pages=604–605 |doi=10.1038/nphoton.2010.209 |bibcode=2010NaPho...4..604J |issn=1749-4893|url-access=subscription }}</ref>
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