DataVXACS Energy LettersPaper
journal article·2023-05-12Open access

Nanographene Coupled with Interfacial Pyrene Derivatives for Thermally Stable Perovskite Solar Cells

Seul-Gi Kim, Thybault de Monfreid, Jeong-Hyeon Kim, Fabrice Goubard, Joseph J. Berry, Kai Zhu, Thanh-Tuân Bui, Nam-Gyu Park

ACS Energy Letters· Volume 8· Issue 5
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Source abstract

Abstract

Although high-efficiency perovskite solar cells (PSCs) have been achieved using a hole-extracting material, spiro-MeOTAD, thermal stability has been unattainable due to the low glass transition temperature of spiro-MeOTAD and additives therein. Here, we report on the use of nanographene-based hole-transporting materials coupled with a pyrene derivative as an interface modifier for thermally stable and high efficiency PSCs. Asymmetric methyl and methoxy groups are introduced in the diphenylamino group that is attached to the hexa- peri -hexabenzocoronene (HBC) nanographene core, coded HBC-DPAMeOMe. 1-Pyrenemethylammonium iodide is coupled to enhance the chemical interaction between perovskite and HBC-DPAMeOMe, which leads to a power conversion efficiency over 23%. A thermal stability test at 85 °C for 1000 h reveals that 83.6% of the initial efficiency (23.04% → 19.25%) is maintained for the device with HBC-DPAMeOMe, while a significant degradation from 20.69% to 5.08% is observed for the device with spiro-MeOTAD. Nanographene-based hole conductors shed light on the thermal stability issue in PSCs.
Source: openalex_inverted_index · Quality: baseline

Research context

Ceramics & glassesNanomaterialsElectronic 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

Chemistry and Nanoscience Center, National Renewable Energy Laboratory, Golden, Colorado 80401, United States

School of Chemical Engineering and Center for Antibonding Regulated Crystals, Sungkyunkwan University, Suwon 16419, Republic of Korea

CY Cergy Paris Université, LPPI, F-95000 Cergy, France

Materials Science Center, National Renewable Energy Laboratory, Golden, Colorado 80401, United States

Renewable and Sustainable Energy Institute, University of Colorado Boulder, Boulder, Colorado 80309, United States

Department of Physics, University of Colorado Boulder, Boulder, Colorado 80309, United States

SKKU Institute of Energy Science and Technology (SIEST), Sungkyunkwan University, Suwon 16419, Republic of Korea

Funding

Agence Nationale de la Recherche · National Research Foundation of Korea · National Renewable Energy Laboratory · Solar Energy Technologies Program · Korea Evaluation Institute of Industrial Technology · French-Korean research collaboration

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