| Title |
Design, synthesis and theoretical simulations of novel spiroindane-based enamines as p-type semiconductors / |
| Authors |
Daskeviciute-Geguziene, Sarune ; Daskeviciene, Maryte ; Kantminienė, Kristina ; Jankauskas, Vygintas ; Kamarauskas, Egidijus ; Gruodis, Alytis ; Karazhanov, Smagul ; Getautis, Vytautas |
| DOI |
10.1098/rsos.232019 |
| Full Text |
|
| Is Part of |
Royal Society Open science.. London : Royal Society. 2024, vol. 11, iss. 5, art. no. 232019, p. 1-11.. ISSN 2054-5703 |
| Keywords [eng] |
enamines ; hole-transporting materials ; solar cells ; spirobisindane |
| Abstract [eng] |
The search for novel classes of hole-transporting materials (HTMs) is a very important task in advancing the commercialization of various photovoltaic devices. Meeting specific requirements, such as charge-carrier mobility, appropriate energy levels and thermal stability, is essential for determining the suitability of an HTM for a given application. In this work, two spirobisindane-based compounds, bearing terminating hole transporting enamine units, were strategically designed and synthesized using commercially available starting materials. The target compounds exhibit adequate thermal stability; they are amorphous and their glass-transition temperatures (>150°C) are high, which minimizes the probability of direct layer crystallization. V1476 stands out with the highest zero-field hole-drift mobility, approaching 1 × 10-5 cm2 V s-1. To assess the compatibility of the highest occupied molecular orbital energy levels of the spirobisindane-based HTMs in solar cells, the solid-state ionization potential (Ip) was measured by the electron photoemission in air of the thin-film method. The favourable morphological properties, energy levels and hole mobility in combination with a simple synthesis make V1476 and related compounds promising materials for HTM applications in antimony-based solar cells and triple-cation-based perovskite solar cells. |
| Published |
London : Royal Society |
| Type |
Journal article |
| Language |
English |
| Publication date |
2024 |
| CC license |
|
