Polymeric Dopant-Free Hole Transporting Materials for Perovskite Solar Cells: Structures and Concepts towards Better Performances
Perovskite solar cells are a hot topic of photovoltaic research, reaching, in few years, an impressive efficiency (25.5%), but their long-term stability still needs to be addressed for industrial production. One of the most sizeable reasons for instability is the doping of the Hole Transporting Mate...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2021-05-01
|
| Series: | Polymers |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2073-4360/13/10/1652 |
| _version_ | 1797533505517780992 |
|---|---|
| author | Mohamed M. H. Desoky Matteo Bonomo Nadia Barbero Guido Viscardi Claudia Barolo Pierluigi Quagliotto |
| author_facet | Mohamed M. H. Desoky Matteo Bonomo Nadia Barbero Guido Viscardi Claudia Barolo Pierluigi Quagliotto |
| author_sort | Mohamed M. H. Desoky |
| collection | DOAJ |
| description | Perovskite solar cells are a hot topic of photovoltaic research, reaching, in few years, an impressive efficiency (25.5%), but their long-term stability still needs to be addressed for industrial production. One of the most sizeable reasons for instability is the doping of the Hole Transporting Material (HTM), being the salt commonly employed as a vector bringing moisture in contact with perovskite film and destroying it. With this respect, the research focused on new and stable “dopant-free” HTMs, which are inherently conductive, being able to effectively work without any addition of dopants. Notwithstanding, they show impressive efficiency and stability results. The dopant-free polymers, often made of alternated donor and acceptor cores, have properties, namely the filming ability, the molecular weight tunability, the stacking and packing peculiarities, and high hole mobility in absence of any dopant, that make them very attractive and a real innovation in the field. In this review, we tried our best to collect all the dopant-free polymeric HTMs known so far in the perovskite solar cells field, providing a brief historical introduction, followed by the classification and analysis of the polymeric structures, based on their building blocks, trying to find structure–activity relationships whenever possible. The research is still increasing and a very simple polymer (PFDT–2F–COOH) approaches PCE = 22% while some more complex ones overcome 22%, up to 22.41% (PPY2). |
| first_indexed | 2024-03-10T11:15:30Z |
| format | Article |
| id | doaj.art-c2147b64ffea4fce8ea9ea9266faebcf |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-03-10T11:15:30Z |
| publishDate | 2021-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Polymers |
| spelling | doaj.art-c2147b64ffea4fce8ea9ea9266faebcf2023-11-21T20:27:08ZengMDPI AGPolymers2073-43602021-05-011310165210.3390/polym13101652Polymeric Dopant-Free Hole Transporting Materials for Perovskite Solar Cells: Structures and Concepts towards Better PerformancesMohamed M. H. Desoky0Matteo Bonomo1Nadia Barbero2Guido Viscardi3Claudia Barolo4Pierluigi Quagliotto5Department of Chemistry and NIS Interdepartmental Center and INSTM Reference Centre, University of Torino, Via Pietro Giuria 7, 10125 Torino, ItalyDepartment of Chemistry and NIS Interdepartmental Center and INSTM Reference Centre, University of Torino, Via Pietro Giuria 7, 10125 Torino, ItalyDepartment of Chemistry and NIS Interdepartmental Center and INSTM Reference Centre, University of Torino, Via Pietro Giuria 7, 10125 Torino, ItalyDepartment of Chemistry and NIS Interdepartmental Center and INSTM Reference Centre, University of Torino, Via Pietro Giuria 7, 10125 Torino, ItalyDepartment of Chemistry and NIS Interdepartmental Center and INSTM Reference Centre, University of Torino, Via Pietro Giuria 7, 10125 Torino, ItalyDepartment of Chemistry and NIS Interdepartmental Center and INSTM Reference Centre, University of Torino, Via Pietro Giuria 7, 10125 Torino, ItalyPerovskite solar cells are a hot topic of photovoltaic research, reaching, in few years, an impressive efficiency (25.5%), but their long-term stability still needs to be addressed for industrial production. One of the most sizeable reasons for instability is the doping of the Hole Transporting Material (HTM), being the salt commonly employed as a vector bringing moisture in contact with perovskite film and destroying it. With this respect, the research focused on new and stable “dopant-free” HTMs, which are inherently conductive, being able to effectively work without any addition of dopants. Notwithstanding, they show impressive efficiency and stability results. The dopant-free polymers, often made of alternated donor and acceptor cores, have properties, namely the filming ability, the molecular weight tunability, the stacking and packing peculiarities, and high hole mobility in absence of any dopant, that make them very attractive and a real innovation in the field. In this review, we tried our best to collect all the dopant-free polymeric HTMs known so far in the perovskite solar cells field, providing a brief historical introduction, followed by the classification and analysis of the polymeric structures, based on their building blocks, trying to find structure–activity relationships whenever possible. The research is still increasing and a very simple polymer (PFDT–2F–COOH) approaches PCE = 22% while some more complex ones overcome 22%, up to 22.41% (PPY2).https://www.mdpi.com/2073-4360/13/10/1652hole transporting materialsdopant-free polymersorganic materialsperovskite solar cells |
| spellingShingle | Mohamed M. H. Desoky Matteo Bonomo Nadia Barbero Guido Viscardi Claudia Barolo Pierluigi Quagliotto Polymeric Dopant-Free Hole Transporting Materials for Perovskite Solar Cells: Structures and Concepts towards Better Performances Polymers hole transporting materials dopant-free polymers organic materials perovskite solar cells |
| title | Polymeric Dopant-Free Hole Transporting Materials for Perovskite Solar Cells: Structures and Concepts towards Better Performances |
| title_full | Polymeric Dopant-Free Hole Transporting Materials for Perovskite Solar Cells: Structures and Concepts towards Better Performances |
| title_fullStr | Polymeric Dopant-Free Hole Transporting Materials for Perovskite Solar Cells: Structures and Concepts towards Better Performances |
| title_full_unstemmed | Polymeric Dopant-Free Hole Transporting Materials for Perovskite Solar Cells: Structures and Concepts towards Better Performances |
| title_short | Polymeric Dopant-Free Hole Transporting Materials for Perovskite Solar Cells: Structures and Concepts towards Better Performances |
| title_sort | polymeric dopant free hole transporting materials for perovskite solar cells structures and concepts towards better performances |
| topic | hole transporting materials dopant-free polymers organic materials perovskite solar cells |
| url | https://www.mdpi.com/2073-4360/13/10/1652 |
| work_keys_str_mv | AT mohamedmhdesoky polymericdopantfreeholetransportingmaterialsforperovskitesolarcellsstructuresandconceptstowardsbetterperformances AT matteobonomo polymericdopantfreeholetransportingmaterialsforperovskitesolarcellsstructuresandconceptstowardsbetterperformances AT nadiabarbero polymericdopantfreeholetransportingmaterialsforperovskitesolarcellsstructuresandconceptstowardsbetterperformances AT guidoviscardi polymericdopantfreeholetransportingmaterialsforperovskitesolarcellsstructuresandconceptstowardsbetterperformances AT claudiabarolo polymericdopantfreeholetransportingmaterialsforperovskitesolarcellsstructuresandconceptstowardsbetterperformances AT pierluigiquagliotto polymericdopantfreeholetransportingmaterialsforperovskitesolarcellsstructuresandconceptstowardsbetterperformances |