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Silica nanosphere textured back refl...

Lewis, Brian Wellington.

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Silica nanosphere textured back reflectors for increased absorption in thin film amorphous silicon solar cells.

Record Type:	Language materials, printed : Monograph/item
Title/Author:	Silica nanosphere textured back reflectors for increased absorption in thin film amorphous silicon solar cells./
Author:	Lewis, Brian Wellington.
Description:	62 p.
Notes:	Source: Masters Abstracts International, Volume: 48-05, page: 3115.
Contained By:	Masters Abstracts International48-05.
Subject:	Engineering, Electronics and Electrical. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1476317
ISBN:	9781109776706

Silica nanosphere textured back reflectors for increased absorption in thin film amorphous silicon solar cells.
Lewis, Brian Wellington.

Silica nanosphere textured back reflectors for increased absorption in thin film amorphous silicon solar cells. - 62 p.

Source: Masters Abstracts International, Volume: 48-05, page: 3115.

Thesis (M.S.)--Iowa State University, 2010.

Absorption of long-wavelength photons in thin-film hydrogenated amorphous silicon (a-Si:H) solar cells is inherently low due to an absorption layer thickness of 250-300nm and long absorption lengths for photons of wavelengths above 700nm. When used in a thin-film solar cell, back reflectors that exhibit diffuse reflection increase the probability of absorption by lengthening the path-lengths of photons. Ordered monolayers of silica nanospheres coated with a reflective surface were investigated for use as a diffuse back reflector.

ISBN: 9781109776706Subjects--Topical Terms:

626636
Engineering, Electronics and Electrical.

Silica nanosphere textured back reflectors for increased absorption in thin film amorphous silicon solar cells.
LDR:02376nam 2200325 4500 001 1399919
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008 130515s2010 ||||||||||||||||| ||eng d
020 $a 9781109776706
035 $a (UMI)AAI1476317
035 $a AAI1476317
040 $a UMI $c UMI
100 1 $a Lewis, Brian Wellington. $3 1678926
245 1 0 $a Silica nanosphere textured back reflectors for increased absorption in thin film amorphous silicon solar cells.
300 $a 62 p.
500 $a Source: Masters Abstracts International, Volume: 48-05, page: 3115.
500 $a Advisers: Vikram Dalal; Rana Biswas.
502 $a Thesis (M.S.)--Iowa State University, 2010.
520 $a Absorption of long-wavelength photons in thin-film hydrogenated amorphous silicon (a-Si:H) solar cells is inherently low due to an absorption layer thickness of 250-300nm and long absorption lengths for photons of wavelengths above 700nm. When used in a thin-film solar cell, back reflectors that exhibit diffuse reflection increase the probability of absorption by lengthening the path-lengths of photons. Ordered monolayers of silica nanospheres coated with a reflective surface were investigated for use as a diffuse back reflector.
520 $a A method for fabricating a monolayer of silica nanospheres was developed using a custom built dip-coating apparatus. Repeatable monolayers of 500nm nanospheres were fabricated on glass and stainless steel substrates. The monolayers were covered with a 200nm layer of silver (Ag) and a 200nm layer of aluminum-doped zinc oxide (ZnO:Al) to be used as a back-reflector in a-Si:H solar cells.
520 $a The back-reflector substrates were measured to have a much higher percentage of diffuse reflectance when compared to flat silver back-reflector substrates. Increases in long-wavelength absorption were observed by normalized external quantum efficiency (NEQE) measurements of the a-Si:H solar cells. Short circuit current density increases were seen in both I-V measurements under AM1.5 lighting as well as in NEQE measurements.
590 $a School code: 0097.
650 4 $a Engineering, Electronics and Electrical. $3 626636
650 4 $a Nanoscience. $3 587832
690 $a 0544
690 $a 0565
710 2 $a Iowa State University. $b Electrical and Computer Engineering. $3 1018524
773 0 $t Masters Abstracts International $g 48-05.
790 1 0 $a Dalal, Vikram, $e advisor
790 1 0 $a Biswas, Rana, $e advisor
790 1 0 $a Shinar, Joseph $e committee member
790 $a 0097
791 $a M.S.
792 $a 2010
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1476317