Version 1
: Received: 16 November 2023 / Approved: 17 November 2023 / Online: 1 December 2023 (07:46:38 CET)
How to cite:
Abdalbaqi, S. Enhanced Photodiodes with Coupled Organic-Inorganic Nanostructures Utilizing double Heterostructure ligands versus Single Ligand. Preprints2023, 2023120028. https://doi.org/10.20944/preprints202312.0028.v1
Abdalbaqi, S. Enhanced Photodiodes with Coupled Organic-Inorganic Nanostructures Utilizing double Heterostructure ligands versus Single Ligand. Preprints 2023, 2023120028. https://doi.org/10.20944/preprints202312.0028.v1
Abdalbaqi, S. Enhanced Photodiodes with Coupled Organic-Inorganic Nanostructures Utilizing double Heterostructure ligands versus Single Ligand. Preprints2023, 2023120028. https://doi.org/10.20944/preprints202312.0028.v1
APA Style
Abdalbaqi, S. (2023). Enhanced Photodiodes with Coupled Organic-Inorganic Nanostructures Utilizing double Heterostructure ligands versus Single Ligand. Preprints. https://doi.org/10.20944/preprints202312.0028.v1
Chicago/Turabian Style
Abdalbaqi, S. 2023 "Enhanced Photodiodes with Coupled Organic-Inorganic Nanostructures Utilizing double Heterostructure ligands versus Single Ligand" Preprints. https://doi.org/10.20944/preprints202312.0028.v1
Abstract
The influence of the ligands in coupled organic-inorganic nanostructures (COINs) on the performance of optoelectronic devices is investigated. We fabricated photodiodes based on pentacene and PbSnanocrystals coupled to organic ligands like 1,2-ethanedithiol (EDT) and tetrabutylammonium iodide (TBAI) and a combination of both, EDT and TBAI, as a heterostructure. These ligands were first separately used to fabricate single ligand-type of organic-inorganic devices and later compared with a heterostructure of PbS-EDT and PbS-TBAI. To tune the optical energy gap of COINs to align with the triplet level of pentacene, it was necessary to choose a suitable particle size. For this purpose, ultraviolet photo-emission spectroscopy (UPS) was used to determine the energy of the highest occupied molecular orbital (HOMO) and the work function of COINs, while the energy of the lowest unoccupied molecular orbital (LUMO) of COINs was estimated subsequently by adding the exciton binding energy and the optical band gap to the measured HOMO energy. Devices with heterostructureCOINs achieve a higher short circuit current than COINs with a single type of the ligands. Finally, even if the requirements of proper energy level alignment are satisfied, the photodiodes' performance was affected by the morphology of COINs. This finding has been demonstrated by atomic force microscopy (AFM) and transmission electron microscopy (TEM). Incident photon to current efficiency (IPCE) shows a shift for the excitonic absorption peaks in the visible range at opposite applied voltages. The IPCE signal for the double heterostructure device is higher than the single type device.
Engineering, Electrical and Electronic Engineering
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
