The next-generation hot-carrier solar cells,which can overcome the Shockley-Queisser limit by harvesting excessenergy from hot carriers,are receiving increasing attention.Lead halide perovskite(LHP)materials are consi...The next-generation hot-carrier solar cells,which can overcome the Shockley-Queisser limit by harvesting excessenergy from hot carriers,are receiving increasing attention.Lead halide perovskite(LHP)materials are considered aspromising candidates due to their exceptional photovoltaic properties,good stability and low cost.The cooling rate of hotcarriers is a key parameter influencing the performance of hot-carrier solar cells.In this work,we successfully detected hotcarrier dynamics in operando LHP devices using the two-pulse photovoltage correlation technique.To enhance the signalto-noise ratio,we applied the delay-time modulation method instead of the traditional power modulation.This advancementallowed us to detect the intraband hot carrier cooling time for the organic LHP CH_(3)NH_(3)PbBr_(3),which is as short as 0.21 ps.In comparison,the inorganic Cs-based LHP CsPbBr_(3)exhibited a longer cooling time of around 0.59 ps due to differentphonon contributions.These results provide us new insights into the optimal design of hot-carrier solar cells and highlightthe potential of LHP materials in advancing solar cell technology.展开更多
品管圈（quality control circle,QCC）是由同一工作场所的人自动自发地组成1个小团体,利用PDCA循环理论,使各圈员运用群体智慧发现问题,科学解决问题,在国外医院管理领域广泛应用,可显著提高健康教育的质量和效果。四川大学华西医院肾...品管圈（quality control circle,QCC）是由同一工作场所的人自动自发地组成1个小团体,利用PDCA循环理论,使各圈员运用群体智慧发现问题,科学解决问题,在国外医院管理领域广泛应用,可显著提高健康教育的质量和效果。四川大学华西医院肾内科血液透析中心于2013年12月~2014年5月应用品管圈对夜班门诊透析患者实施健康教育,取得良好效果,现报道如下。展开更多
基金supported by the National Key R&D Program of China(Grant No.2021YFA1400500)New Cornerstone Science Foundation through the New Cornerstone Investigator Program,and the XPLORER Prize.
文摘The next-generation hot-carrier solar cells,which can overcome the Shockley-Queisser limit by harvesting excessenergy from hot carriers,are receiving increasing attention.Lead halide perovskite(LHP)materials are considered aspromising candidates due to their exceptional photovoltaic properties,good stability and low cost.The cooling rate of hotcarriers is a key parameter influencing the performance of hot-carrier solar cells.In this work,we successfully detected hotcarrier dynamics in operando LHP devices using the two-pulse photovoltage correlation technique.To enhance the signalto-noise ratio,we applied the delay-time modulation method instead of the traditional power modulation.This advancementallowed us to detect the intraband hot carrier cooling time for the organic LHP CH_(3)NH_(3)PbBr_(3),which is as short as 0.21 ps.In comparison,the inorganic Cs-based LHP CsPbBr_(3)exhibited a longer cooling time of around 0.59 ps due to differentphonon contributions.These results provide us new insights into the optimal design of hot-carrier solar cells and highlightthe potential of LHP materials in advancing solar cell technology.
文摘品管圈（quality control circle,QCC）是由同一工作场所的人自动自发地组成1个小团体,利用PDCA循环理论,使各圈员运用群体智慧发现问题,科学解决问题,在国外医院管理领域广泛应用,可显著提高健康教育的质量和效果。四川大学华西医院肾内科血液透析中心于2013年12月~2014年5月应用品管圈对夜班门诊透析患者实施健康教育,取得良好效果,现报道如下。
