Enhancing the efficiency and stability of perovskite solar cells based on moisture-resistant dopant free hole transport materials by using a 2D-BA2PbI4 interfacial layer

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Ghoreishi, Farzaneh S.Uppsala universitet,Fysikalisk kemi,Tarbiat Modares Univ, Dept Nanotechnol Engn, Tehran 14115111, Iran (author)

Enhancing the efficiency and stability of perovskite solar cells based on moisture-resistant dopant free hole transport materials by using a 2D-BA2PbI4 interfacial layer

Article/chapterEnglish2022

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2022
Royal Society of Chemistry (RSC),2022
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LIBRIS-ID:oai:DiVA.org:uu-469013
https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-469013URI
https://doi.org/10.1039/d1cp04863eDOI

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Summary in:English

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Title in Web of Science: Enhancing the efficiency and stability of perovskite solar cells based on moisture-resistant dopant free hole transport materials by using a 2D-BA(2)PbI(4) interfacial layer
In this work, the photovoltaic performance and stability of perovskite solar cells (PSCs) based on a dopant-free hole transport layer (HTL) are efficiently improved by inserting a two-dimensional (2D) interfacial layer. The benzyl ammonium lead iodide (BA2PbI4) 2D perovskite is used as an interfacial layer between the 3D CH3NH3PbI3 perovskite and two moisture-resistant dopant-free HTLs including poly[[2,3-bis(3-octyloxyphenyl)-5,8-quinoxalinediyl]-2,5-thiophenediyl] (TQ1) and poly(3-hexylthiophene) (P3HT). TQ1 with a facile synthesis procedure has a higher moisture resistivity compared to P3HT which can improve the stability of PSCs. The 2D BA2PbI4 perovskite with a less-volatile bulkier organic cation efficiently passivates the defects at the perovskite/HTL interface, leading to 11.95% and 15.04% efficiency for the modified TQ1 and P3HT based cells, respectively. For a better understanding, the structural, optical, and electrical properties of PSCs comprising P3HT and TQ1 HTLs with and without interface modification are studied. The interface modified PSCs show slower open-circuit voltage decay and longer carrier lifetimes compared to unmodified cells. In addition, impedance spectroscopy reveals lower charge transport resistance and higher recombination resistance for the modified devices, which could be associated with the modification of the interface between the 3D CH3NH3PbI3 perovskite and HTL caused by the 2D interfacial layer. Also after aging under ambient conditions for about 800 hours, the modified PCSs retain more than 80% of their initial PCEs. These results give us the hope of achieving simpler, cheaper, and more stable PSCs with dopant-free HTLs through 2D interfacial layers, which have great potential for commercialization.

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NATURVETENSKAP Kemi Materialkemi hsv//swe
NATURAL SCIENCES Chemical Sciences Materials Chemistry hsv//eng
NATURVETENSKAP Kemi Fysikalisk kemi hsv//swe
NATURAL SCIENCES Chemical Sciences Physical Chemistry hsv//eng

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Ahmadi, VahidTarbiat Modares Univ, Dept Nanotechnol Engn, Tehran 14115111, Iran.;Tarbiat Modares Univ, Dept Elect & Comp Engn, Tehran 14115194, Iran. (author)
Alidaei, MaryamTarbiat Modares Univ, Dept Elect & Comp Engn, Tehran 14115194, Iran. (author)
Arabpour Roghabadi, FarzanehTarbiat Modares Univ, Dept Elect & Comp Engn, Tehran 14115194, Iran.;Tarbiat Modares Univ, Dept Chem Engn, Tehran 14115114, Iran. (author)
Samadpour, MahmoudKN Toosi Univ Technol, Dept Phys, Tehran 1541849611, Iran. (author)
Poursalehi, RezaTarbiat Modares Univ, Dept Nanotechnol Engn, Tehran 14115111, Iran. (author)
Johansson, Erik M. J.Uppsala universitet,Fysikalisk kemi(Swepub:uu)erjoh367 (author)
Uppsala universitetFysikalisk kemi (creator_code:org_t)

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In:Physical Chemistry, Chemical Physics - PCCP: Royal Society of Chemistry (RSC)24:3, s. 1675-16841463-90761463-9084

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