Organic-inorganic halide perovskites: perspectives for silicon-based tandem solar cells

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F14%3A00439580" target="_blank" >RIV/68378271:_____/14:00439580 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1109/JPHOTOV.2014.2355421" target="_blank" >http://dx.doi.org/10.1109/JPHOTOV.2014.2355421</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1109/JPHOTOV.2014.2355421" target="_blank" >10.1109/JPHOTOV.2014.2355421</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Organic-inorganic halide perovskites: perspectives for silicon-based tandem solar cells

Popis výsledku v původním jazyce

Using highly sensitive photothermal deflection spectroscopy, we measure the absorption spectrum of CH3NH3PbI3 perovskite films at room temperature. We find a band edge with a particularly steep absorption tail, translating into an Urbach energy as smallas 15 meV. The sub-bandgap optical absorption is below the detection limit i.e. <1 cm-1. These results confirm the excellent electronic properties of organometallic halide perovskite thin films, resulting in very high open-circuit voltages obtained for perovskite solar cells. The shape of the absorption edges proves that it has a direct bandgap, with bandgap of about 1.55 eV. Following intentional moisture ingress, we find that the absorption at photon energies below 2.5 eV is strongly reduced, suggesting a compositional change of the deposited material. The very low subgap absorption together with open-circuit voltages >1.1 V renders perovskite solar cells a promising option for Si-based tandem solar cells.

Název v anglickém jazyce

Organic-inorganic halide perovskites: perspectives for silicon-based tandem solar cells

Popis výsledku anglicky

Using highly sensitive photothermal deflection spectroscopy, we measure the absorption spectrum of CH3NH3PbI3 perovskite films at room temperature. We find a band edge with a particularly steep absorption tail, translating into an Urbach energy as smallas 15 meV. The sub-bandgap optical absorption is below the detection limit i.e. <1 cm-1. These results confirm the excellent electronic properties of organometallic halide perovskite thin films, resulting in very high open-circuit voltages obtained for perovskite solar cells. The shape of the absorption edges proves that it has a direct bandgap, with bandgap of about 1.55 eV. Following intentional moisture ingress, we find that the absorption at photon energies below 2.5 eV is strongly reduced, suggesting a compositional change of the deposited material. The very low subgap absorption together with open-circuit voltages >1.1 V renders perovskite solar cells a promising option for Si-based tandem solar cells.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BM - Fyzika pevných látek a magnetismus

OECD FORD obor

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Projekt

<a href="/cs/project/LM2011026" target="_blank" >LM2011026: Laboratoř nanostruktur a nanomateriálů</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2014

Kód důvěrnosti údajů

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

Název periodika

IEEE Journal of Photovoltaics

ISSN

2156-3381

e-ISSN

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Svazek periodika

4

Číslo periodika v rámci svazku

6

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

7

Strana od-do

1545-1551

Kód UT WoS článku

000344542900035

EID výsledku v databázi Scopus

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