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All Journal Science and Technology Indonesia Harmoni Sosial : Jurnal Pengabdian Dan Solidaritas Masyarakat
Herlambang Nugroho
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Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Education Environmental Science Materials Science & Nanotechnology Physics Social Sciences Other

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Pemberdayaan Pelaku UMKM dan Ibu-Ibu PKK dalam Semangat Gotong Royong untuk Menunjang Penguatan Ekonomi di Dusun Gaten, Kalurahan Sumberrejo Muhammad Safrudin; Beni Winawan; Farhan Arif Pradana; Assyifa Fiqria Salamah; Desta Sekar Riswandari; Herlambang Nugroho; Rafianti M Djumadil; Rio Susila
Harmoni Sosial : Jurnal Pengabdian dan Solidaritas Masyarakat Vol. 2 No. 3 (2025): Juli : Harmoni Sosial : Jurnal Pengabdian dan Solidaritas Masyarakat
Publisher : Lembaga Pengembangan Kinerja Dosen

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62383/harmoni.v2i3.1798

Abstract

Gaten Hamlet, Sumberrejo Village, holds significant local economic potential through the Micro, Small, and Medium Enterprises (MSMEs) initiative and the active participation of Family Welfare Empowerment (PKK) mothers. This study aims to analyze in depth effective empowerment strategies in supporting economic strengthening in Gaten Hamlet, by integrating and prioritizing the value of mutual cooperation as the main pillar. Using a descriptive qualitative approach, data were collected through in-depth interviews with MSME actors, PKK members and administrators, and community leaders, complemented by participatory observation and implementation of training. The results of the study indicate that the synergy of capacity building training programs, facilitation of access to capital and marketing, and strengthening community networks based on mutual cooperation have been proven to significantly increase MSME productivity and family economic independence. Mutual cooperation not only functions as a social glue, but also becomes a driving force for collaboration in various stages, from production, distribution, to promotion of local products. The implications of this study highlight the importance of developing policies that support community-based economic ecosystems and the sustainability of empowerment programs through active participation and community ownership.
The Synthesis of CH₃NH₃PbI₃₋ₓBrₓ under Uncontrolled Humidity for Perovskite Solar Cell Application Kusumawardani, Cahyorini; Ikhsan, Jaslin; Budiasih, Kun Sri; Herlambang Nugroho; Widowati, Asri
Science and Technology Indonesia Vol. 11 No. 1 (2026): January
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/sti.2026.11.1.298-310

Abstract

CH₃NH₃PbI₃₋ₓBrₓ perovskite films were successfully synthesized under uncontrolled humidity using a two-step spin-coating method followed by Ostwald ripening (OR) treatment. Bromide incorporation into CH₃NH₃PbI₃ was achieved by diluting the pre-formed CH₃NH₃PbI₃ films with CH₃NH₃Br (MABr) solutions at various concentrations. X-ray diffraction (XRD) analysis confirmed the formation of a tetragonal perovskite phase with reduced lattice parameters as the bromide concentration increased, indicating successful substitution of I⁻ by Br⁻ ions. Scanning electron microscopy (SEM) and energy-dispersive X-ray (EDX) characterization showed that moderate bromide incorporation (30–40 mg/mL) produced dense and uniform grains with homogeneous halide distribution, whereas excessive MABr resulted in non-uniform morphology and halide segregation, particularly under humid conditions. Optical analysis revealed a gradual blue shift of the absorption edge, consistent with band gap widening due to lattice contraction. Photovoltaic performance measurements demonstrated that higher MABr concentrations led to decreased current density and fill factor, attributed to excessive bromide content and defect formation. These findings indicate that controlled bromide incorporation via Ostwald ripening using an MABr concentration of 20 mg/mL effectively enhances the structural quality, film stability, and photovoltaic performance of CH₃NH₃PbI₃₋ₓBrₓ perovskite solar cells under humid environments.
Co-Authors Asri Widowati Assyifa Fiqria Salamah Beni Winawan Cahyorini Kusumawardani Desta Sekar Riswandari Farhan Arif Pradana Jaslin Ikhsan Kun Sri Budiasih Muhammad Safrudin Rafianti M Djumadil Rio Susila