Rubidium Antimony Iodide (Rb3Sb2I9) is on the frontier of perovskite-inspired halide semiconductor research, with its lead-free nature and optoelectronic properties pointing to its significant potential for various energy harvesting and sensing applications. However, the performance bottlenecks that have emerged from Rb3Sb2I9 device studies to date highlight the importance of identifying its defect states that act as recombination centers. Here we examine the structure, energetics and electronic properties of intrinsic point defects using ab initio density functional methods. Rubidium vacancies and interstitials are found to be common defects, but they have very shallow gap states and may not enhance recombination significantly beyond that of bulk effects. In contrast, iodine vacancies are also common but are deep defects whose recombination behavior may be important in many circumstances. Our energy calculations for iodine vacancies quantitatively match several experiments. Strategies are suggested for ameliorating these defects in order to move Rb3Sb2I9 toward realizing its full potential.
Menopause literacy is gaining in visibility, particularly thanks to social media. This article explores menopause literacy within the emerging subgenre of menomoir, a non-fiction subgenre hybridising memoir, lifestyle recommendations, and health advice. Popularised by contemporary celebrity women, menomoir uses a wry and intimate voice to chronicle a famous woman's menopausal struggles and triumphs. These multi-modal texts challenge the dominant cultural narrative that menopause is an era of brake-screeching decline, and encourage the reader to prioritise their own bodily autonomy during menopausal transition. However, the texts also typically utilise healthist frameworks like longevity discourse to shift the burden of health to the individual and downplay systemic factors. Nonetheless, in a culture where older women's contributions are often minimised, celebrity menopause advocates can play important roles to normalise menopause and enable citizen readers to write their own stories.
Students are cheating with AI. But the literature lacks students’ perceptions of cheating and AI. We interviewed thirty students about their AI use, cheating definitions and confessions, and why they turn to AI over other resources. Students’ responses show intention and effort matter when considering what constitutes as “cheating.” They worry for their intellectual development, feel uncertain and fearful, use guilt and fairness to regulate their behavior, and turn to technology instead of personal relationships. By centering the student perspective, academic libraries can develop responsible and responsive AI policies and safe exploration, reinforce human + AI relations, and educate and advocate around environmental concerns.
Citizens around the world have migrated under the shadow of authoritarianism, and many are increasingly acquiring political and voting rights in their host countries. Yet we know little about the content of their foreign-policy preferences or the salience with which they prioritize homeland-facing issues relative to domestic concerns. We argue that experiences of authoritarian rule prior to migration generate anti-regime sentiments among diasporas, inclining them toward hawkish foreign-policy positions toward the homeland regime. These preferences heighten the salience of homeland-facing foreign policy, even relative to highly consequential domestic issues. We test this argument with harmonized candidate-choice experiments administered to an original sample of Hong Kong diasporas in four host countries (Australia, Canada, the United Kingdom, and the United States). We find that respondents strongly preferred candidates advocating hawkish economic and geopolitical policies against China. These foreign-policy positions were consistently prioritized over salient domestic issues such as healthcare and the economy, and this structure of preferences held across subgroups with varying degrees of host-country integration and homeland ties. Our findings provide novel experimental evidence that diasporas continue to care intensely about and voice on behalf of their homeland even after exit.
The authors of this study investigate the effectiveness of literacy programs created by Next Gen Personal Finance (NGPF). Using a sample of 5,838 students from 354 schools in 42 states during the 2022-23 class year, they find that NGPF programs are highly effective in improving financial literacy across all measured categories for all participant groups. Female students experience greater improvements across all measures, except financial behavior, than their male peers. All ethnic groups benefit significantly from the programs offered, with no significant differences among subgroups. There are mixed results when comparing students in in-person training to those in an online/hybrid format. States mandating financial literacy programs experience smaller, significant improvements in most measures compared to students in states that do not mandate such programs.
