Interface Engineering in Perylene Diimide-Based Organic Photovoltaics with Enhanced Photovoltage

Publikation: Beitrag in FachzeitschriftÜbersichtsartikel (Review)BeigetragenBegutachtung

Beitragende

  • Aiswarya Abhisek Mohapatra - , IISc: Indian Institute of Science (Autor:in)
  • Manasi Pranav - , IISc: Indian Institute of Science (Autor:in)
  • Suraj Yadav - , IISc: Indian Institute of Science (Autor:in)
  • Chandrasekhar Gangadharappa - , IISc: Indian Institute of Science (Autor:in)
  • Jiaying Wu - , Imperial College London (Autor:in)
  • Chiara Labanti - , Imperial College London (Autor:in)
  • Jakob Wolansky - , Professur für Optoelektronik, Institut für Angewandte Physik (IAP), Technische Universität Dresden (Autor:in)
  • Johannes Benduhn - , Professur für Optoelektronik, Technische Universität Dresden (Autor:in)
  • Ji Seon Kim - , Imperial College London (Autor:in)
  • James Durrant - , Imperial College London, Swansea University (Autor:in)
  • Satish Patil - , IISc: Indian Institute of Science (Autor:in)

Abstract

The introduction of nonfullerene acceptors (NFA) facilitated the realization of high-efficiency organic solar cells (OSCs); however, OSCs suffer from relatively large losses in open-circuit voltage (VOC) as compared to inorganic or perovskite solar cells. Further enhancement in power conversion efficiency requires an increase in VOC. In this work, we take advantage of the high dipole moment of twisted perylene-diimide (TPDI) as a nonfullerene acceptor (NFA) to enhance the VOC of OSCs. In multiple bulk heterojunction solar cells incorporating TPDI with three polymer donors (PTB7-Th, PM6 and PBDB-T), we observed a VOC enhancement by modifying the cathode with a polyethylenimine (PEIE) interlayer. We show that the dipolar interaction between the TPDI NFA and PEIE─enhanced by the general tendency of TPDI to form J-aggregates─plays a crucial role in reducing nonradiative voltage losses under a constant radiative limit of VOC. This is aided by comparative studies with PM6:Y6 bulk heterojunction solar cells. We hypothesize that incorporating NFAs with significant dipole moments is a feasible approach to improving the VOC of OSCs.

Details

OriginalspracheEnglisch
Seiten (von - bis)25224-25231
Seitenumfang8
FachzeitschriftACS Applied Materials and Interfaces
Jahrgang15
Ausgabenummer21
PublikationsstatusVeröffentlicht - 31 Mai 2023
Peer-Review-StatusJa

Externe IDs

PubMed 37191283

Schlagworte

ASJC Scopus Sachgebiete

Schlagwörter

  • dipolar interaction, interface engineering, nonfullerene acceptors, organic photovoltaics, perylene diimide