Publications by authors named "Collins Kiguye"
The energy level offset at inorganic layer-organic layer interfaces and the mismatch of hole/electron mobilities of the individual layers greatly limit the establishment of balanced charge carrier injection inside the emissive layer of halide perovskite light-emitting diodes (PeQLEDs). In contrast with other types of light-emitting devices, namely OLEDs and QLEDs, various techniques such as inserting an electron suppression layer between the emissive and electron transport layer have been employed as a means of establishing charge carrier injection into their respective emissive layers. Hence, in this study, we report the use of a thin layer of Poly(4-vinylpyridine) (PVPy) (an electron suppression material) placed between the emissive and electron transport layer of a halide PeQLEDs fabricated with an inverted configuration.
View Article and Find Full Text PDFArticle Synopsis
- Achieving efficient electron transport from the electron transport layer (ETL) to the emissive layer (EML) is crucial for enhancing the performance of quantum dot light-emitting diodes (QD-LEDs).
- This study investigates how different configurations of a Poly(4-vinylpyridine) (PVPy) interlayer affect the charge injection balance and performance of red QD-LEDs made from InP materials.
- The findings suggest that a lower concentration of PVPy (0.1 mg/mL) improves device performance, while increasing this concentration leads to poorer outcomes, with the first special device design outshining the others in overall efficiency and luminance.
Controllable coating and reshaping of gold nanorods with tetracyanoquinodimethane.
Chem Commun (Camb)
October 2019
Various nanoparticle surface layers allow unique functionalities. We developed a coating method with tetracyanoquinodimethane that forms solid layers through π stacking on gold nanorod surfaces. Its reaction mechanism was investigated with reaction time, aging time and surfactant concentration.
View Article and Find Full Text PDF