https://ogma.newcastle.edu.au/vital/access/ /manager/Index en-au 5 https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:33914 Wed 23 Jan 2019 11:42:52 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:33910 oc of 1.07 V. The obtained performance is one of the highest performances in inverted perovskite layouts. The cut‐price and straightforward synthesis with elegant scale up makes these classes of materials important for the industry to produce high‐throughput printed perovskite solar cells for large area applications.]]> Wed 23 Jan 2019 10:40:21 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:49156 Tue 14 Nov 2023 11:41:55 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:47436 Thu 19 Jan 2023 17:01:34 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:48493 Mon 29 Jan 2024 18:00:46 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:39958 L-F) has been designed and synthesized starting from a low-cost pyrene core functionalized with triphenilamine substituents at 1,3,6,8 positions (L-H), obtained via Suzuki coupling reactions. Its performance when used as green emitter in organic light emitting diodes (OLEDs) or as dopant-free hole-transporting material (HTM) in halide perovskite solar cells (PSCs) is higher than that of the L-H counterpart, in spite of its lower bulk hole-mobility (7.0 x 10⁻⁶ cm²/V) to L-H (1.9 x 10⁻⁴ cm²/V). In fact, the OLED devices based on a L-F active layer showed excellent green emission (brightness and current efficiency were 1759.8 cd/m² and 3.7 cd/A, respectively) at a 4.5 V turn-on voltage. When the molecules were employed as a dopant-free HTM in PSCs, L-F led to a power conversion efficiency (PCE) and open circuit voltage (V_oc) of 5.9% and 1.07 V, respectively, thus outperforming those of corresponding devices based on L-H (PCE = 5.0% and V_oc = 0.87 V) under similar experimental conditions (AM 1.5G and 100 mW cm²). We attribute the enhancements of L-F-based optoelectronic devices (OLEDs and PSCs) to the observed better quality of the L-F films. The promising performance of L-F indicates that fluorination of small molecules can be an effective strategy to achieve low-cost and high-performing materials for energy harvesting and display-based organic electronic devices.]]> Mon 29 Jan 2024 17:53:33 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:48833 Mon 10 Apr 2023 10:43:09 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:37073 b:6,5-b′]dithiophene (TPA-NADT-TPA), 4,4′-(anthracene-2,6-diyl)bis(N,N-bis(4-methoxyphenyl)aniline) (TPA-ANR-TPA) and N²,N²,N⁶,N⁶-tetrakis(4-methoxyphenyl)anthracene-2,6-diamine (DPA-ANR-DPA), are designed and synthesized for use in organic light-emitting diodes (OLEDs) and perovskite solar cells (PSCs). In OLEDs, devices based on TPA-NADT-TPA, TPA-ANR-TPA and DPA-ANR-DPA showed pure blue, blue green, and green emission, respectively. Also, the maximum brightness of the devices with a turn-on voltage of 3.8 V reached 8682 cd m⁻² for TPA-NADT-TPA, 11 180 cd m⁻² for TPA-ANR-TPA, and 18 600 cd m⁻² for DPA-ANR-DPA. These new materials are also employed as hole transporting materials (HTMs) in inverted PSCs, where they were used without additives. The inverted devices based on these HTMs achieved an overall efficiency of 10.27% for TPA-NADT-TPA, 7.54% for TPA-ANR-TPA, and 6.05% for DPA-ANR-DPA under identical conditions (AM 1.5G and 100 mW cm⁻²). While the PSCs with TPA-NADT-TPA as the HTM achieved the highest efficiency, the DPA-ANR-DPA-based OLED devices showed the brightest emission and efficiency. Based on the obtained promising performance, it is clear that this molecular design presents a new research strategy to develop materials that can be used in multiple types of devices.]]> Fri 14 Aug 2020 13:34:14 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:36858 Fri 10 Jul 2020 19:14:44 AEST ]]>