Pushing Frontiers

Pushing Frontiers is NTU's research and innovation magazine that provides a window into NTU's latest research achievements, focus and perspectives across various scientific disciplines.Published versio

Replication Data for: Hot Carrier Extraction in CH3NH3PbI3 Unveiled by Pump-Push-Probe Spectroscopy

Halide perovskites recently emerged as a promising material for development in hot carrier solar cells (HCSCs), where the excess energy of above-bandgap photons is harvested before being wasted to heat to enhance device efficiency. Presently, HC separation and transfer processes at higher energy states remain poorly understood. Herein, we investigate the excited-state dynamics in the ubiquitous CH3NH3PbI3 using pump-push-probe spectroscopy, which has its intrinsic advantages for studying these dynamics over the conventional transient spectroscopy, albeit complementary to one another. By exploiting the broad excited state absorption characteristics, our findings reveal the transfer of HCs from these higher energy states into bathophenanthroline (bphen), an energy selective organic acceptor far above perovskite's bandedges. Complete HC extraction is realized only after overcoming the interfacial barrier formed at the heterojunction, estimated to be between 1.01 eV and 1.08 eV above bphen’s lowest unoccupied molecular orbital level. The insights gained from this study are essential for the development of a new class of optoelectronics

New Horizons in the Europe of Knowledge

This editorial introduces the notion of the Europe of Knowledge and places it in the European integration research agenda. We first describe what the concept means before suggesting how to approach the Europe of Knowledge as a new case for investigating European integration dynamics. This discussion revolves around the evolution of policy developments in research and higher education to show how knowledge policies are compound and manifest distinct dimensions of differentiated integration and experimentation, both fruitful theoretical research agendas. We then summarise the articles to show the respective Europe of Knowledge themes they highlight. We conclude by considering how the Europe of Knowledge in the making encourages testing established empirical and analytical assumptions about European integration and experimenting with emerging ideas about regional cooperation from around the world

Physical mechanism and modeling of heat generation and transfer in magnetic fluid hyperthermia through Néelian and Brownian relaxation: a review

10.1186/s12938-017-0327-xBiomedical engineering online1613

First ASEAN-Canada Forum and Public Symposium : Reflections on an Inclusive and Equitable Asean Community in 2015, 20–21 August 2013, Ho Chi Minh city, Vietnam; report

Given the immense socioeconomic, political and cultural diversity in Southeast Asia, ASEAN provides the space to cultivate a sense of regional community through consensus-building and embracing diversity. In order to transform growth-centred development into people-centred development, there must be greater focus and commitment to nurturing the youth of ASEAN, and more resources and collaborative efforts must be channelled towards education and good governance. Focus sessions and presentations on a variety of topics around inclusivity are summarized. In managing inequality, particular attention has to be given to corruption and taxation