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23 November 2023 Dr. Fitri Aulia Permatasari was honored as one of the recipients of L’Oréal-UNESCO For Women in Science Indonesia fellowships.
18 November 2023 Dr.Eng. Ferry Iskandar was officially inaugurated as one of the professors of Institut Teknologi Bandung
News in Detik Edu about Dr. Jotti Karunawan, the first graduate of the Nanoscience and Nanotechnology Doctoral Program of ITB. https://www.detik.com/edu/edutainment/d-6839985/itb-luluskan-doktor-sains-dan-teknologi-nano-pertama-bahas-ini-di-disertasinya
14 July 2023 Congratulations to Jotti Karunawan for successfully defending his Doctoral Dissertation!
14 July 2023 A new paper entitled "Para Grass Derived Porous Carbon-rich SiOx/C as a Stable Anode for Lithium-ion Batteries" has been accepted for publication in Energy & Fuels (IF=4.65)
1 July 2023 A new paper entitled "Iron-Decorated Nitrogen/Boron co-Doped Reduced Graphene Oxide Aerogel for Neutral Rechargeable Zn-Air Batteries" has been accepted for publication in Batteries (IF=5.39)
Latest Publications
Latest Publications
Semiconducting colloidal quantum dots (CQDs) represent an emerging class of thermoelectric materials for use in a wide range of future applications. CQDs combine solution processability at low temperatures with the potential for upscalable manufacturing via printing techniques. Moreover, due to their low dimensionality, CQDs exhibit quantum confinement and a high density of grain boundaries, which can be independently exploited to tune the Seebeck coefficient and thermal conductivity, respectively. This unique combination of attractive attributes makes CQDs very promising for application in emerging thermoelectric generator (TEG) technologies operating near room temperature.
Perovskite solar cells (PSCs) have attracted much attention among third-generation photovoltaic technologies. Owing to their unique optical and electrical properties, PSCs can achieve high efficiency compared to traditional silicon solar cells. However, this high efficiency is obtained using a lead-based perovskite material as a photoactive layer, which has the disadvantage of environmental toxicity. A tin-based perovskite is the most promising alternative to lead-based perovskite due to its suitable bandgap, high carrier mobility, and low toxicity. After a few years of intensive research, tin-based PSCs have achieved over 14% of PCE, mainly due to the additive engineering of the tin perovskite layer. This review presents the challenges and additive roles of tin-based PSCs, both experimentally and computationally, in detail. Ultimately, the forthcoming challenges and research prospects are proposed to enhance the efficiency and stability of tin-based PSCs.
Perovskite solar cells (PSCs) have attracted much attention among third-generation photovoltaic technologies. Owing to their unique optical and electrical properties, PSCs can achieve high efficiency compared to traditional silicon solar cells. However, this high efficiency is obtained using a lead-based perovskite material as a photoactive layer, which has the disadvantage of environmental toxicity. A tin-based perovskite is the most promising alternative to lead-based perovskite due to its suitable bandgap, high carrier mobility, and low toxicity. After a few years of intensive research, tin-based PSCs have achieved over 14% of PCE, mainly due to the additive engineering of the tin perovskite layer. This review presents the challenges and additive roles of tin-based PSCs, both experimentally and computationally, in detail. Ultimately, the forthcoming challenges and research prospects are proposed to enhance the efficiency and stability of tin-based PSCs.
In this study, we present a high-performance FeS2 supercapacitor synthesized using a direct one-step process with the aid of polyvinylpyrrolidone (PVP). The incorporation of PVP addressed the limitations of FeS2, such as low energy density and poor conductivity, while facilitating a one-step synthesis. The FeS2/PVP nanocomposite exhibited excellent electrochemical properties, including a high specific capacity of 735 F g−1 (at 2 A g−1) and a high energy density of 69.74 W h kg−1 (at 911 W kg−1). PVP played a crucial role in enhancing ion movement and improving charge-carrier resistance and surface passivation. The findings offer new insights into novel supercapacitor electrodes with promising applications.
In this study, poly (diallyldimethylammonium chloride) (PDDA) is employed as a cationic surfactant to tailor the surface potential of bare ball-milled Si particles, enabling the electrostatic self-assembly between Si particles and graphitic carbon nitride as the N-rich-C precursor. Continuous N-rich-C enwrapped ball-milled silicon (Si@N-rich-C) has been obtained after pyrolysis with a high N to C ratio of 0.65 and abundant pyridinic-N and pyrrolic-N, facilitating fast kinetic transport and accommodating more Li+ ion storage. Combined with the high capacity of Si, Li-ion cell with Si@N-rich-C electrode exhibits a high capacity of 1732 mAh g−1 after 200 cycles of charge-discharge at 400 mA g−1. At high-rate testing, Si@N-rich-C also maintains a high capacity of 1673 mAh g−1 at 1000 mA g−1. This study provides an effective approach for synthesizing high-capacity silicon anode for Li-ion batteries.
This work provides valuable insights into utilizing functionalized phytochemical-embedded carbon dots for bioimaging applications. The doping of nitrogen by adding urea showed an alteration of surface charge, which is more positive based on zeta potential measurement. The more positive CD particles showed that Andrographis paniculata-urea-based CDs were the best particles to penetrate cells than others related to the alteration of the surface charge and the functional group of the CDs, with the optimum dose of 12.5 μg/mL for 3 h of treatment for bioimaging assay.
In this study, poly (diallyldimethylammonium chloride) (PDDA) is employed as a cationic surfactant to tailor the surface potential of bare ball-milled Si particles, enabling the electrostatic self-assembly between Si particles and graphitic carbon nitride as the N-rich-C precursor. Continuous N-rich-C enwrapped ball-milled silicon (Si@N-rich-C) has been obtained after pyrolysis with a high N to C ratio of 0.65 and abundant pyridinic-N and pyrrolic-N, facilitating fast kinetic transport and accommodating more Li+ ion storage. Combined with the high capacity of Si, Li-ion cell with Si@N-rich-C electrode exhibits a high capacity of 1732 mAh g−1 after 200 cycles of charge-discharge at 400 mA g−1. At high-rate testing, Si@N-rich-C also maintains a high capacity of 1673 mAh g−1 at 1000 mA g−1. This study provides an effective approach for synthesizing high-capacity silicon anode for Li-ion batteries.
This work provides valuable insights into utilizing functionalized phytochemical-embedded carbon dots for bioimaging applications. The doping of nitrogen by adding urea showed an alteration of surface charge, which is more positive based on zeta potential measurement. The more positive CD particles showed that Andrographis paniculata-urea-based CDs were the best particles to penetrate cells than others related to the alteration of the surface charge and the functional group of the CDs, with the optimum dose of 12.5 μg/mL for 3 h of treatment for bioimaging assay.
Energy and Environmental Materials Laboratory
Energy and Environmental Materials Laboratory
Department of Physics, Faculty of Mathematics and Natural Sciences,
Institut Teknologi Bandung
Jl. Ganesha No 10, Bandung, Indonesia 40132
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