guest ::
| Home > Publications database > Exclusive pathway selectivity of dimorphic nanoaggregates in an n-type semiconductor: distinct optical features and electron mobility |
| Home > Publications database > Exclusive pathway selectivity of dimorphic nanoaggregates in an n-type semiconductor: distinct optical features and electron mobility |
| Journal Article | PUBDB-2026-02888 |
; ; ; ; ;
2026
RSC
London [u.a.]
This record in other databases:
Please use a persistent id in citations: doi:10.1039/D6TC01848C doi:10.3204/PUBDB-2026-02888
Abstract: The presence of polymorphic crystalline domains through diverse aggregation pathways leading to distinct aggregated structures, along with thermal phase transformations, poses a significant challenge in controlling the optical and electrical conductivity of bulk molecular semiconductors. A low activation barrier of these equilibrium states of aggregates allows phase oscillation under thermal fluctuations during device operation or device storage, often resulting in inconsistent electrical performance. Achieving selective aggregation through a top-down approach in solid-state or bottom-up pre-aggregation strategies and minimising phase crossover through significantly high thermal activation necessitates a precise understanding of structure–property correlations. Elaborate experimental investigations using various sampling conditions have been carried out systematically to establish the correlations. As a result, a robust example for achieving high domain purity in top-down and bottom-up trails using an n-type molecular semiconductor with dimorphic aggregates has been clearly established. Specifically, in the naphthalene diimide derived material (C12B2), we observe two distinct aggregation pathways that result in aggregates (Agg1 and Agg2) of markedly different optical electron transport characteristics. Categorically, Agg2 films yielded homogenous domains with reproducible device outputs for a large number of devices with good field-effect electron mobility (∼0.95 cm2 V−1 s−1) in solution-processed OFETs, along with a high on–off current ratio (ION/OFF ∼ 108). A detailed mechanistic investigation on the evolution of these phases/aggregates under diverse conditions is summarized as a rare example of controlled formation of aggregates on substrate surfaces.
; 
; Clarivate Analytics Master Journal List ; Current Contents - Engineering, Computing and Technology ; Current Contents - Physical, Chemical and Earth Sciences ; Essential Science Indicators ; IF >= 5 ; JCR ; National-Konsortium ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection
|
The record appears in these collections: |
PDF
PDF (PDFA)