Demonstration of Flexible Hybrid Sealants by Calcium Corrosion Testing for Organic Photovoltaic Application

Bibliographic Details
Main Author:	Kim, Minjae
Language:	English
Published:	The Ohio State University / OhioLINK 2017
Subjects:	Electrical Engineering
Online Access:	http://rave.ohiolink.edu/etdc/view?acc_num=osu1500761090631818

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spelling	ndltd-OhioLink-oai-etd.ohiolink.edu-osu15007610906318182021-08-03T07:03:35Z Demonstration of Flexible Hybrid Sealants by Calcium Corrosion Testing for Organic Photovoltaic Application Kim, Minjae Electrical Engineering Technical and economic viability of photovoltaic (PV) technology are governed by three parameters: efficiency, cost and lifetime. Since its inception, having benefited from inexpensive mass production capability by roll-to-roll processing, the main driver in organic photovoltaics (OPV) research has been towards achieving high efficiency. Continued effort was fructified with achievement surpassing 10% OPV efficiency, long considered a break-even point for commercial viability. Shifting research focus towards extended lifetime was a next logical step. Increased lifetime of OPV by reliable encapsulation enhances technical feasibility and economic viability. So far, focus has been given on encapsulation barrier films, and little effort has been made on sealants themselves or sealants that have dual functionality as encapsulants; of this limited effort, the testing of existing commercial sealants is the general trend.Requirements of sealants for OPV encapsulation include compatibility with low-cost and low-temperature OPV processing, lightness, flexibility, transparency, as well as thermal and UV stability. Hybrid sealants combine the advantages of low permeability of inorganic sealants with the flexibility of organic sealants. This thesis is on the demonstration of new flexible hybrid prototype sealants by calcium corrosion testing. Foremost, electronic properties and historical developments of organic semiconductors are reviewed in Chapter 2. Focus is given to difference between organic and inorganic semiconductors. Subsequently, we expatiate on photocurrent generation process in OPVs, including generation and diffusion of excitons, followed by dissociation of excitons and collection of charge carriers. Chapter 2 is concluded with OPV economics and lifetime. In Chapter 3, development and demonstration of sealants are presented. Sealants are screen-printable, flexible and compatible with low-temperature processing of OPVs.Sealing capability of the hybrid sealants was compared with commercial silicone based hybrid sealant, i.e. polydimethylsiloxane (PDMS). Far superior sealing capability, compared to PDMS was demonstrated by calcium corrosion test in ambient air. 2017 English text The Ohio State University / OhioLINK http://rave.ohiolink.edu/etdc/view?acc_num=osu1500761090631818 http://rave.ohiolink.edu/etdc/view?acc_num=osu1500761090631818 unrestricted This thesis or dissertation is protected by copyright: some rights reserved. It is licensed for use under a Creative Commons license. Specific terms and permissions are available from this document's record in the OhioLINK ETD Center.
collection	NDLTD
language	English
sources	NDLTD
topic	Electrical Engineering
spellingShingle	Electrical Engineering Kim, Minjae Demonstration of Flexible Hybrid Sealants by Calcium Corrosion Testing for Organic Photovoltaic Application
author	Kim, Minjae
author_facet	Kim, Minjae
author_sort	Kim, Minjae
title	Demonstration of Flexible Hybrid Sealants by Calcium Corrosion Testing for Organic Photovoltaic Application
title_short	Demonstration of Flexible Hybrid Sealants by Calcium Corrosion Testing for Organic Photovoltaic Application
title_full	Demonstration of Flexible Hybrid Sealants by Calcium Corrosion Testing for Organic Photovoltaic Application
title_fullStr	Demonstration of Flexible Hybrid Sealants by Calcium Corrosion Testing for Organic Photovoltaic Application
title_full_unstemmed	Demonstration of Flexible Hybrid Sealants by Calcium Corrosion Testing for Organic Photovoltaic Application
title_sort	demonstration of flexible hybrid sealants by calcium corrosion testing for organic photovoltaic application
publisher	The Ohio State University / OhioLINK
publishDate	2017
url	http://rave.ohiolink.edu/etdc/view?acc_num=osu1500761090631818
work_keys_str_mv	AT kimminjae demonstrationofflexiblehybridsealantsbycalciumcorrosiontestingfororganicphotovoltaicapplication
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Demonstration of Flexible Hybrid Sealants by Calcium Corrosion Testing for Organic Photovoltaic Application

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