We demonstrate the first commercial production–ready white light-emitting diodes(LEDs)for the general illumination market with red colloidal quantum dots(QDs)applied in an on–chip configuration.We show the red QDs w...We demonstrate the first commercial production–ready white light-emitting diodes(LEDs)for the general illumination market with red colloidal quantum dots(QDs)applied in an on–chip configuration.We show the red QDs with tunable peak emission and narrow full width at half-maximum in combination with a conventional phosphor material can lead to LED conversion efficiency improvements of 5% to 15% over commercial phosphor based LEDs at correlated color temperatures(CCTs)ranging from 5000 to 2700 K.Furthermore,the challenges associated with reliability under high temperature,high blue flux intensity,and high humidity operation have been overcome to meet consumer market requirements.Finally,a demonstrator lamp at 3000 K color temperature and 90 color rendering index(CRI)with QD based LEDs show a larger efficiency gain up to 17%,attributed to the reduced blue LED droop from the lower drive current and the lower heat sink temperature when compared to a standard phosphor based LED lamp output.展开更多
This paper addresses a set of ideological tensions involving the classification of agential kinds,which I see as the methodological and conceptual core of the sentience discourse.Specifically,I consider ideals involve...This paper addresses a set of ideological tensions involving the classification of agential kinds,which I see as the methodological and conceptual core of the sentience discourse.Specifically,I consider ideals involved in the classification of biological and artifactual kinds,and ideals related to agency,identity,and value.These ideals frame the background against which sentience in Artificial Intelligence(AI)is theorized and debated,a framework I call the AIdeal.To make this framework explicit,I review the historical discourse on sentience as it appears in ancient,early modern,and the 20th century philosophy,paying special attention to how these ideals are projected onto artificial agents.I argue that tensions among these ideals create conditions where artificial sentience is both necessary and impossible,resulting in a crisis of ideology.Moving past this crisis does not require a satisfying resolution among competing ideals,but instead requires a shift in focus to the material conditions and actual practices in which these ideals operate.Following Charles Mills,I sketch a nonideal approach to AI and artificial sentience that seeks to loosen the grip of ideology on the discourse.Specifically,I propose a notion of participation that deflates the sentience discourse in AI and shifts focus to the material conditions in which sociotechnical networks operate.展开更多
文摘We demonstrate the first commercial production–ready white light-emitting diodes(LEDs)for the general illumination market with red colloidal quantum dots(QDs)applied in an on–chip configuration.We show the red QDs with tunable peak emission and narrow full width at half-maximum in combination with a conventional phosphor material can lead to LED conversion efficiency improvements of 5% to 15% over commercial phosphor based LEDs at correlated color temperatures(CCTs)ranging from 5000 to 2700 K.Furthermore,the challenges associated with reliability under high temperature,high blue flux intensity,and high humidity operation have been overcome to meet consumer market requirements.Finally,a demonstrator lamp at 3000 K color temperature and 90 color rendering index(CRI)with QD based LEDs show a larger efficiency gain up to 17%,attributed to the reduced blue LED droop from the lower drive current and the lower heat sink temperature when compared to a standard phosphor based LED lamp output.
文摘This paper addresses a set of ideological tensions involving the classification of agential kinds,which I see as the methodological and conceptual core of the sentience discourse.Specifically,I consider ideals involved in the classification of biological and artifactual kinds,and ideals related to agency,identity,and value.These ideals frame the background against which sentience in Artificial Intelligence(AI)is theorized and debated,a framework I call the AIdeal.To make this framework explicit,I review the historical discourse on sentience as it appears in ancient,early modern,and the 20th century philosophy,paying special attention to how these ideals are projected onto artificial agents.I argue that tensions among these ideals create conditions where artificial sentience is both necessary and impossible,resulting in a crisis of ideology.Moving past this crisis does not require a satisfying resolution among competing ideals,but instead requires a shift in focus to the material conditions and actual practices in which these ideals operate.Following Charles Mills,I sketch a nonideal approach to AI and artificial sentience that seeks to loosen the grip of ideology on the discourse.Specifically,I propose a notion of participation that deflates the sentience discourse in AI and shifts focus to the material conditions in which sociotechnical networks operate.
