DataVXACS Applied Energy MaterialsPaper
journal article·2020-07-27

Analysis of the Efficiency Losses in Hybrid Perovskite/PTAA Solar Cells with Different Molecular Weights: Morphology versus Kinetics

Narges Yaghoobi Nia, Maria Méndez, Barbara Paci, Amanda Generosi, Aldo Di Carlo, Emilio Palomares

ACS Applied Energy Materials· Volume 3· Issue 7
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Source abstract

Abstract

The PTAA polymer (poly[bis(4-phenyl)(2,4,6-trimethylphenyl)amine]) is often used as a hole transport material (HTM) for high-efficiency perovskite solar cells (PSCs). However, there are great differences within the solar cell efficiencies reported. Herein, we show that when increasing PTAA molecular weight (MW) from 10 to 115 kDa, the power conversion efficiency also increases. We analyze how the differences in MW influence the interfacial carrier losses in the PSCs under operando conditions using advanced photoinduced spectroscopic techniques. Moreover, we compare kinetics and structural/morphological effects by studying different PTAA MW films. Our results show that the observed differences within the reported PSC efficiencies are due to the differences in carrier recombination kinetics, which are influenced by the differences in the polymer MW.
Source: openalex_inverted_index · Quality: baseline

Research context

PolymersElectronic materials

OpenAlex topics: Perovskite Materials and Applications · Conducting polymers and applications · Organic Electronics and Photovoltaics

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Centre for Hybrid and Organic Solar Energy (CHOSE), University of Rome Tor Vergata, via del Politecnico 1, Rome 00133, Italy

The Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology (BIST), Avda. Països Catalans, 16, Tarragona E-43007, Spain

Consiglio Nazionale delle Ricerche-Istituto di Struttura della Materia (CNR-ISM), Area di Ricerca di Tor Vergata, via del Fosso del Cavaliere 100, Rome 0013, Italy

LASE-National University of Science and Technology “MISiS”, 4, Leninsky Prosp., Moscow 119049, Russian Federation

ICREA, Passeig Lluís Companys, 23, Barcelona E-08010, Spain

Funding

Institut Catal? d'Investigaci? Qu?mica · Secretar?a de Estado de Investigaci?n, Desarrollo e Innovaci?n · Horizon 2020 Framework Programme · Ministry of Education and Science of the Russian Federation · Instituci? Catalana de Recerca i Estudis Avan?ats

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