About this Abstract |
| Meeting |
MS&T26: Materials Science & Technology
|
| Symposium
|
2026 Graduate Student Poster Contest
|
| Presentation Title |
SPG-24: Effect of Functionalization by Conjugated Organic Ligands on Charge Transport Properties in Thin Films of Si-NCs |
| Author(s) |
Muhammad Atif Makhdoom |
| On-Site Speaker (Planned) |
Muhammad Atif Makhdoom |
| Abstract Scope |
Silicon is dominating the world in photovoltaic technology. Silicon nanocrystals (Si-NCs) is necessity for economical processing of PV modules. In this work, commercially prepared Si-NCs with a mean diameter of 60 nm is utilized with a pretreatment process followed by functionalization. Styryl and 1-ethenyl-4-fluorobenzyl conjugate moieties are grafted on hydrogen-terminated Si-NCs via hydrosilylation of phenylacetylene and 1-ethynyl-4-fluoro benzene, respectively. Thin-films of these functionalized Si-NCs with different thicknesses are prepared and analyzed in a purposed device architecture at room temperature which reveals a p-type character of functionalized Si-NCs films.Detail analysis of current density–voltage (J–V) characteristics of styryl functionalized Si-NCs films shows that the drifting of charge carriers follows a power law relationship in the presence of exponentially distributedtrap states. Moreover, a unique voltage dependence of the J–V curves also reveals a transition between direct and Fowler–Nordheim (F–N) tunneling mechanisms. |