東華大學圖書館 |

語系: 繁體中文

說明(常見問題)

回圖書館首頁

手機版館藏查詢

登入

回首頁

切換: 標籤 | MARC模式 | ISBD

Silicon quantum dots for optical app...

Wu, Jeslin J.

FindBook

Google Book

Amazon

博客來

Silicon quantum dots for optical applications.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Silicon quantum dots for optical applications./
作者:	Wu, Jeslin J.
面頁冊數:	146 p.
附註:	Source: Dissertation Abstracts International, Volume: 77-03(E), Section: B.
Contained By:	Dissertation Abstracts International77-03B(E).
標題:	Nanoscience. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3728206
ISBN:	9781339135915

Silicon quantum dots for optical applications.
Wu, Jeslin J.

Silicon quantum dots for optical applications. - 146 p.

Source: Dissertation Abstracts International, Volume: 77-03(E), Section: B.

Thesis (Ph.D.)--University of Minnesota, 2015.

Luminescent silicon quantum dots (SiQDs) are emerging as attractive materials for optoelectronic devices, third generation photovoltaics, and bioimaging. Their applicability in the real world is contingent on their optical properties and long-term environmental stability; and in biological applications, factors such as water solubility and toxicity must also be taken into consideration.

ISBN: 9781339135915Subjects--Topical Terms:

587832
Nanoscience.

Silicon quantum dots for optical applications.
LDR:03469nmm a2200373 4500 001 2066845
005 20160204121834.5
008 170521s2015 ||||||||||||||||| ||eng d
020 $a 9781339135915
035 $a (MiAaPQ)AAI3728206
035 $a AAI3728206
040 $a MiAaPQ $c MiAaPQ
100 1 $a Wu, Jeslin J. $3 3181695
245 1 0 $a Silicon quantum dots for optical applications.
300 $a 146 p.
500 $a Source: Dissertation Abstracts International, Volume: 77-03(E), Section: B.
500 $a Adviser: Uwe R. Kortshagen.
502 $a Thesis (Ph.D.)--University of Minnesota, 2015.
520 $a Luminescent silicon quantum dots (SiQDs) are emerging as attractive materials for optoelectronic devices, third generation photovoltaics, and bioimaging. Their applicability in the real world is contingent on their optical properties and long-term environmental stability; and in biological applications, factors such as water solubility and toxicity must also be taken into consideration.
520 $a The aforementioned properties are highly dependent on the QDs' surface chemistry. In this work, SiQDs were engineered for the respective applications using liquid-phase and gas-phase functionalization techniques. Preliminary work in luminescent downshifting for photovoltaic systems are also reported.
520 $a Highly luminescent SiQDs were fabricated by grafting unsaturated hydrocarbons onto the surface of hydrogen-terminated SiQDs via thermal and photochemical hydrosilylation. An industrially attractive, all gas-phase, nonthermal plasma synthesis, passivation (aided by photochemical reactions), and deposition process was also developed to reduce solvent waste.
520 $a With photoluminescence quantum yields (PLQYs) nearing 60 %, the alkyl-terminated QDs are attractive materials for optical applications. The functionalized SiQDs also exhibited enhanced thermal stability as compared to their unfunctionalized counterparts, and the photochemically-hydrosilylated QDs further displayed photostability under UV irradiation.
520 $a These environmentally-stable SiQDs were used as luminescent downshifting layers in photovoltaic systems, which led to enhancements in the blue photoresponse of heterojunction solar cells. Furthermore, the QD films demonstrated antireflective properties, improving the coupling efficiency of sunlight into the cell.
520 $a For biological applications, oxide, amine, or hydroxyl groups were grafted onto the surface to create water-soluble SiQDs. Luminescent, water-soluble SiQDs were produced in by microplasma treating the QDs in water. Stable QYs exceeding 50 % were obtained. Radical-based and catalytic hydrosilylation reactions were also investigated to engineer individually-dispersed SiQDs in water.
520 $a The results of this dissertation demonstrate the potential of SiQDs in optical applications. In the future, their application may lead to improvements in the efficiencies of photovoltaic devices and perhaps allow the cells to exceed the Shockley-Queisser limit. In biology, the stability of the SiQDs may allow long-term monitoring of biomolecules and perhaps lead to new discoveries.
590 $a School code: 0130.
650 4 $a Nanoscience. $3 587832
650 4 $a Plasma physics. $3 3175417
650 4 $a Theoretical physics. $3 2144760
650 4 $a Mechanical engineering. $3 649730
690 $a 0565
690 $a 0759
690 $a 0753
690 $a 0548
710 2 $a University of Minnesota. $b Mechanical Engineering. $3 1020853
773 0 $t Dissertation Abstracts International $g 77-03B(E).
790 $a 0130
791 $a Ph.D.
792 $a 2015
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3728206