Organometal trihalide perovskite solar cells arguably represent the most auspicious new photovoltaic technology so far, as they possess an astonishing combination of properties. The impressive and brisk advances achieved so far bring forth highly efficient and solution processable solar cells, holding great promise to grow into a mature technology that is ready to be embedded on a large scale. However, the vast majority of state-of-the-art perovskite solar cells contains a dense TiO2 electron collection layer that requires a high temperature treatment (>450 °C), which obstructs the road towards roll-to-roll processing on flexible foils that can withstand no more than ∼150 °C. Furthermore, this high temperature treatment leads to an overall increased energy payback time and cumulative energy demand for this emerging photovoltaic technology. Here we present the implementation of an alternative TiO2 layer formed from an easily prepared nanoparticle dispersion, with annealing needs well within reach of roll-to-roll processing, making this technology also appealing from the energy payback aspect. Chemical and morphological analysis allows to understand and optimize the processing conditions of the TiO2 layer, finally resulting in a maximum obtained efficiency of 13.6% for a planar heterojunction solar cell within an ITO/TiO2/CH3NH3PbI3-xClxpoly(3-hexylthiophene)/Ag architecture.

BackgroundYoung people including adolescents face barriers to healthcare and increased risk of poor sexual and reproductive health (SRH), which are exacerbated in humanitarian settings. Our systematic review assessed the evidence on SRH interventions for young people including adolescents in humanitarian settings, strategies to increase their utilisation and their effects on health outcomes.MethodsWe searched peer-reviewed and grey literature published between 1980 and 2018 using search terms for adolescents, young people, humanitarian crises in low- and middle- income countries and SRH in four databases and relevant websites. We analysed literature matching pre-defined inclusion criteria using narrative synthesis methodology, and appraised for study quality.FindingsWe found nine peer-reviewed and five grey literature articles, the majority published post-2012 and mostly high- or medium-quality, focusing on prevention of unintended pregnancies, HIV/STIs, maternal and newborn health, and prevention of sexual and gender-based violence. We found no studies on prevention of mother-to-child transmission (PMTCT), safe abortion, post-abortion care, urogenital fistulae or female genital mutilation (FGM). Thirteen studies reported positive effects on outcomes (majority were positive changes in knowledge and attitudes), seven studies reported no effects in some SRH outcomes measured, and one study reported a decrease in number of new and repeat FP clients. Strategies to increase intervention utilisation by young people include adolescent-friendly spaces, peer workers, school-based activities, and involving young people.DiscussionYoung people, including adolescents, continue to be a neglected group in humanitarian settings. While we found evidence that some SRH interventions for young people are being implemented, there are insufficient details of specific intervention components and outcome measurements to adequately map these interventions. Efforts to address this key population’s SRH needs and evaluate effective implementation modalities require urgent attention. Specifically, greater quantity and quality of evidence on programmatic implementation of these interventions are needed, especially for comprehensive abortion care, PMTCT, urogenital fistulae, FGM, and for LGBTQI populations and persons with disabilities. If embedded within a broader SRH programme, implementers and/or researchers should include young people-specific strategies, targeted at both girls/women and boys/men where appropriate, and collect age- and sex-disaggregated data to help ascertain if this population’s diverse needs are being addressed.

BackgroundIn 2011, a decision was made to scale up a pilot innovation involving ‘adherence clubs’ as a form of differentiated care for HIV positive people in the public sector antiretroviral therapy programme in the Western Cape Province of South Africa. In 2016 we were involved in the qualitative aspect of an evaluation of the adherence club model, the overall objective of which was to assess the health outcomes for patients accessing clubs through epidemiological analysis, and to conduct a health systems analysis to evaluate how the model of care performed at scale. In this paper we adopt a complex adaptive systems lens to analyse planned organisational change through intervention in a state health system. We explore the challenges associated with taking to scale a pilot that began as a relatively simple innovation by a non-governmental organisation.ResultsOur analysis reveals how a programme initially representing a simple, unitary system in terms of management and clinical governance had evolved into a complex, differentiated care system. An innovation that was assessed as an excellent idea and received political backing, worked well whilst supported on a small scale. However, as scaling up progressed, challenges have emerged at the same time as support has waned. We identified a ‘tipping point’ at which the system was more likely to fail, as vulnerabilities magnified and the capacity for adaptation was exceeded. Yet the study also revealed the impressive capacity that a health system can have for catalysing novel approaches.ConclusionsWe argue that innovation in largescale, complex programmes in health systems is a continuous process that requires ongoing support and attention to new innovation as challenges emerge. Rapid scaling up is also likely to require recourse to further resources, and a culture of iterative learning to address emerging challenges and mitigate complex system errors. These are necessary steps to the future success of adherence clubs as a cornerstone of differentiated care. Further research is needed to assess the equity and quality outcomes of a differentiated care model and to ensure the inclusive distribution of the benefits to all categories of people living with HIV.

Health systems are critical for health outcomes as they underpin intervention coverage and quality, promote users’ rights and intervene on the social determinants of health. Governance is essential for health system endeavours as it mobilises and coordinates a multiplicity of actors and interests to realise common goals. The inherently social, political and contextualised nature of governance, and health systems more broadly, has implications for measurement, including how the health of women, children and adolescents health is viewed and assessed, and for whom. Three common lenses, each with their own views of power dynamics in policy and programme implementation, include a service delivery lens aimed at scaling effective interventions, a societal lens oriented to empowering people with rights to effect change and a systems lens concerned with creating enabling environments for adaptive learning. We illustrate the implications of each lens for the why, what and how of measuring health system drivers across micro, meso and macro health systems levels, through three examples (digital health, maternal and perinatal death surveillance and review, and multisectoral action for adolescent health). Appreciating these underpinnings of measuring health systems and governance drivers of the health of women, children and adolescents is essential for a holistic learning and action agenda that engages a wider range of stakeholders, which includes, but also goes beyond, indicator-based measurement. Without a broadening of approaches to measurement and the types of research partnerships involved, continued investments in the health of women, children and adolescents will fall short.

Vezimfilho, a model program for the training of health care workers was developed, implemented and evaluated in close collaboration with government and non-government partners in South Africa. It was implemented and evaluated in two districts in the Eastern Cape and Western Cape provinces, respectively. This initiative represents one of the first attempts to build capacity in the health sector to address gender-based violence and has been a leading example of how to address within the South African context. Outputs have been the development of a model for the health sector response to gender violence, a training package Vezimfilho! and a partnership with the Department of Health to address the sustained integration of capacity building in this area.

Adolescents are an increasing proportion of low and middle-income country populations. Their coming of age is foundational for health behaviour, as well as social and productive citizenship. We mapped intervention areas for adolescent sexual and reproductive health, including HIV, mental health and violence prevention to sectors responsible for them using a framework that highlights settings, roles and alignment. Out of 11 intervention areas, health is the lead actor for one, and a possible lead actor for two other interventions depending on the implementation context. All other interventions take place outside of the health sector, with the health sector playing a range of bilateral, trilateral supporting roles or in several cases a minimal role. Alignment across the sectors varies from indivisible, enabling or reinforcing to the other extreme of constraining and counterproductive. Governance approaches are critical for brokering these varied relationships and interactions in multisectoral action for adolescent health, to understand the context of such change and to spark, sustain and steer it.

Background: Youth participation makes an essential contribution to the design of policies and with the appropriate structures, and processes, meaningful engagement leads to healthier, more just, and equal societies. There is a substantial gap between rhetoric and reality in terms of youth participation and there is scant research about this gap, both globally and in South Africa. In this paper we examine youth participation in the Adolescent and Youth Health Policy (AYHP) formulation process to further understand how youth can be included in health policy-making. Methods: A conceptual framework adapted from the literature encompassing Place, Purpose, People, Process and Partnerships guided the case study analysis of the AYHP. Qualitative data was collected via 30 in-depth, semi-structured interviews of policy actors from 2019-2021. Results: Youth participation in the AYHP was a ‘first’ and unique component for health policy in South Africa. It took place in a fragmented policy landscape with multiple actors, where past and present social and structural determinants, as well as contemporary bureaucratic and donor politics, still shape both the health and participation of young people. Youth participation was enabled by leadership from certain government actors and involvement of key academics with a foundation in long standing youth research participatory programs. However, challenges related to when, how and which youth were involved remained. Youth participation was not consistent throughout the health policy formulation process. This is related to broader contextual challenges including the lack of a representative and active youth citizenry, siloed health programs and policy processes, segmented donor priorities, and the lack of institutional capability for multi-sectoral engagement required for youth health. Conclusion: Youth participation in the AYHP was a step toward including youth in the development of health policy but more needs to be done to bridge the gap between rhetoric and reality.

The Sustainable Development Goals (SDGs) and the United Nations Global Strategy (2016–30) emphasize that all women, children and adolescents ‘survive, thrive and transform’. A key element of this global policy framework is that gender equality is a stand-alone goal as well as a cross-cutting priority. Gender inequality and intersecting social and structural determinants shape health systems, including the content of policy documents, with implications for implementation. This article applies a gender lens to policy documents by national government bodies that have mandates on adolescent health in South Africa. Data were 15 policy documents, authored between 2003 and 2018, by multiple actors. The content analysis was guided by key lines of enquiry, and policy documents were classified along the continuum of gender blind to gender transformative. Only three policy documents defined gender, and if gender was addressed, it was mostly in gender-sensitive ways, at times gender specific, but rarely gender transformative. Building on this, a critical discourse analysis identified what is problematized and what is left unproblematized by actors, identifying the key interrelated dominant and marginalized discourses, as well as the ‘silences’ embedded in policy documents. The discourse analysis revealed that dominant and marginalized discourses reflect how gender is conceptualized as fixed, categorical identities, vs as fluid social processes, with implications for how rights and risks are understood. The discourses substantiate an over-riding focus on adolescent girls, outside of the context of power relations, with minimal attention to boys in terms of their own health or through a gender lens, as well as little consideration of LGBTIQ+ adolescents beyond HIV. Dynamic and complex relationships exist between the South Africa context, actors, content and processes, in shaping both how gender is problematized and how ‘solutions’ are represented in these policies. How gender is conceptualized matters, both for policy analysis and for praxis, and policy documents can be part of foundations for transforming gender and intersecting power relations.