Development of the World's Smallest Perovskite LEDs Reported
A research team from Zhejiang University in eastern China, guided by Di Dawei and Zhao Baodan, has unveiled micro- and nano-perovskite LEDs utilizing a groundbreaking semiconductor technology. These advanced LEDs have achieved an impressive...
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A research team from Zhejiang University in eastern China, guided by Di Dawei and Zhao Baodan, has unveiled micro- and nano-perovskite LEDs utilizing a groundbreaking semiconductor technology. These advanced LEDs have achieved an impressive pixel length of just 90 nanometers, surpassing the constraints of traditional LEDs and establishing a new benchmark for the smallest pixel size recorded in this domain.
The research article titled "Downscaling micro- and nano-perovskite LEDs" was published in the academic journal Nature on March 19.
Di remarked that in the realm of electronic science, the process of minimizing the size of fundamental devices is termed "downscaling," which has been a driving force behind advancements in computing, information display, and human-machine interactions. He mentioned that the goal of shrinking devices has consistently been a priority for scientists.
Zhao elaborated that reducing LED size could enable ultrahigh-definition and ultrahigh-precision photoelectric displays. However, he pointed out that the complex manufacturing process leads to extremely high costs for micro-LEDs. Additionally, the efficiency of micro-LEDs significantly declines when pixel sizes shrink to around 10 micrometers or less. This threshold is crucial for the ultrahigh-resolution requirements of high-end augmented and virtual reality applications. Consequently, the elevated costs and diminished light-emitting efficiency have hindered the widescale commercial use of micro-LEDs.
Since the team's introduction of the "micro-perovskite LEDs" concept in 2021, they have successfully enhanced the light-emitting efficiency through various material and process innovations. This progress has enabled them to produce perovskite LEDs with pixel sizes that range from hundreds of micrometers down to 90 nanometers, all while preserving outstanding performance.
The researchers highlighted that traditional micro-LEDs face a significant efficiency drop below 10 micrometers in size. Conversely, the micro- and nano-perovskite LEDs exhibit only minor downsizing effects beginning at an exceptionally small size of approximately 180 nanometers, showcasing their distinct advantages.
For practical display applications, the LED arrays will require programmable circuits to provide useful information, necessitating further collaboration with industry partners. The team is actively pursuing the application of their innovations.
Mathilde Moreau for TROIB News
The research article titled "Downscaling micro- and nano-perovskite LEDs" was published in the academic journal Nature on March 19.
Di remarked that in the realm of electronic science, the process of minimizing the size of fundamental devices is termed "downscaling," which has been a driving force behind advancements in computing, information display, and human-machine interactions. He mentioned that the goal of shrinking devices has consistently been a priority for scientists.
Zhao elaborated that reducing LED size could enable ultrahigh-definition and ultrahigh-precision photoelectric displays. However, he pointed out that the complex manufacturing process leads to extremely high costs for micro-LEDs. Additionally, the efficiency of micro-LEDs significantly declines when pixel sizes shrink to around 10 micrometers or less. This threshold is crucial for the ultrahigh-resolution requirements of high-end augmented and virtual reality applications. Consequently, the elevated costs and diminished light-emitting efficiency have hindered the widescale commercial use of micro-LEDs.
Since the team's introduction of the "micro-perovskite LEDs" concept in 2021, they have successfully enhanced the light-emitting efficiency through various material and process innovations. This progress has enabled them to produce perovskite LEDs with pixel sizes that range from hundreds of micrometers down to 90 nanometers, all while preserving outstanding performance.
The researchers highlighted that traditional micro-LEDs face a significant efficiency drop below 10 micrometers in size. Conversely, the micro- and nano-perovskite LEDs exhibit only minor downsizing effects beginning at an exceptionally small size of approximately 180 nanometers, showcasing their distinct advantages.
For practical display applications, the LED arrays will require programmable circuits to provide useful information, necessitating further collaboration with industry partners. The team is actively pursuing the application of their innovations.
Mathilde Moreau for TROIB News
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