Effect of lead thiocyanate ions on performance of tin-based perovskite solar cells

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F20%3A00523659" target="_blank" >RIV/61388955:_____/20:00523659 - isvavai.cz</a>

Výsledek na webu

<a href="http://hdl.handle.net/11104/0307976" target="_blank" >http://hdl.handle.net/11104/0307976</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jpowsour.2020.228067" target="_blank" >10.1016/j.jpowsour.2020.228067</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Effect of lead thiocyanate ions on performance of tin-based perovskite solar cells

Popis výsledku v původním jazyce

Perovskite solar cells (PSCs) have a high efficiency, and their price is relatively low. Thus, they are attracting considerable attention as a substitute for expensive Si solar cells. However, highly efficient PSCs are not ecofriendly, because they contain toxic metals such as Pb. Therefore, we develop Sn-based PSCs to reduce the Pb content. First, 11 different perovskite precursors are synthesized by increasing the amount of Pb(SCN)2 from 0 to 0.5 M in CH(NH2)2SnI3. Then, PSCs are fabricated, and their characteristics are compared. Scanning electron microscopy confirms that the proper amount of Pb(SCN)2 uniformizes the grain size of the perovskite layer and reduces the amounts of pinholes. The crystallization and optical absorption of each perovskite layer are confirmed by X-ray diffraction analysis and ultraviolet–visible spectra, and the characteristics of the PSCs are confirmed by the current density–voltage graph. The Sn-based PSCs with 0.25 M Pb(SCN)2 exhibit a high efficiency of 8.4%, which is significantly higher than that (1.6%) of Sn-based PSCs without Pb(SCN)2. The calculated Pb concentration of CH3NH3PbI3 is 0.37 g/mL, while that of CH(NH2)2SnI3 containing Pb(SCN)2 is 0.08 g/mL. These results indicate the possibility of producing highly efficient PSCs with reduced lead content.

Název v anglickém jazyce

Effect of lead thiocyanate ions on performance of tin-based perovskite solar cells

Popis výsledku anglicky

Perovskite solar cells (PSCs) have a high efficiency, and their price is relatively low. Thus, they are attracting considerable attention as a substitute for expensive Si solar cells. However, highly efficient PSCs are not ecofriendly, because they contain toxic metals such as Pb. Therefore, we develop Sn-based PSCs to reduce the Pb content. First, 11 different perovskite precursors are synthesized by increasing the amount of Pb(SCN)2 from 0 to 0.5 M in CH(NH2)2SnI3. Then, PSCs are fabricated, and their characteristics are compared. Scanning electron microscopy confirms that the proper amount of Pb(SCN)2 uniformizes the grain size of the perovskite layer and reduces the amounts of pinholes. The crystallization and optical absorption of each perovskite layer are confirmed by X-ray diffraction analysis and ultraviolet–visible spectra, and the characteristics of the PSCs are confirmed by the current density–voltage graph. The Sn-based PSCs with 0.25 M Pb(SCN)2 exhibit a high efficiency of 8.4%, which is significantly higher than that (1.6%) of Sn-based PSCs without Pb(SCN)2. The calculated Pb concentration of CH3NH3PbI3 is 0.37 g/mL, while that of CH(NH2)2SnI3 containing Pb(SCN)2 is 0.08 g/mL. These results indicate the possibility of producing highly efficient PSCs with reduced lead content.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

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

Projekt

<a href="/cs/project/8F17001" target="_blank" >8F17001: Bezolovnaté perovskitové solární články s dlouhodobou stabilitou</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2020

Kód důvěrnosti údajů

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

Název periodika

Journal of Power Sources

ISSN

0378-7753

e-ISSN

—

Svazek periodika

458

Číslo periodika v rámci svazku

MAY 2020

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

8

Strana od-do

228067

Kód UT WoS článku

000523643100015

EID výsledku v databázi Scopus

2-s2.0-85082190323