Very thin thermally stable TiO2 blocking layers with enhanced electron transfer for solar cells

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F17%3A00476038" target="_blank" >RIV/61388955:_____/17:00476038 - isvavai.cz</a>

Alternative codes found

RIV/68378271:_____/17:00476038 RIV/61989592:15310/17:73583143

Result on the web

<a href="http://dx.doi.org/10.1016/j.apmt.2017.05.008" target="_blank" >http://dx.doi.org/10.1016/j.apmt.2017.05.008</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.apmt.2017.05.008" target="_blank" >10.1016/j.apmt.2017.05.008</a>

Result language

angličtina

Original language name

Very thin thermally stable TiO2 blocking layers with enhanced electron transfer for solar cells

Original language description

Very thin TiO2 blocking layers (BLs) are important components for achieving high solar power conversion efficiencies (PCEs) in the dye-sensitized solar cells, and particularly perovskite solar cells (PSCs). When reasonably thin, TiO2 BLs prevent recombination of photogenerated charges at the conductive fluorine-doped tin oxide (FTO) glass substrate used in these devices. However, all previous attempts to generate efficient TiO2 BLs have been hampered by an insufficient charge transfer rate at quasi-amorphous TiO2 and very low thermal stability, leading to the loss of blocking properties after thermal calcination. In this work, we report the deposition of homogenous very thin (~ 30 nm) TiO2 BLs by combining advanced high impulse power magnetron sputtering (HiPIMS) and additional bipolar medium-frequency (MF) magnetron co-sputtering. The as-deposited TiO2 films were shown to provide excellent blocking properties which were preserved even after thermal treatment at 450 °C. Moreover, TiO2 BLs thermally treated at 450 °C show a well-developed rutile structure and 70 times higher photocurrents compared to the as-deposited layers. This work opens possibilities for the utilization of very thin TiO2 layers in solar cell technologies providing a double mode of action: blocking functionality and efficient electron transport.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10405 - Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis)

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2017

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Applied Materials Today

ISSN

2352-9407

e-ISSN

—

Volume of the periodical

9

Issue of the periodical within the volume

DEC 2017

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

8

Pages from-to

122-129

UT code for WoS article

000417805400014

EID of the result in the Scopus database

2-s2.0-85021406904