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Abstrak :
[Dye Sensitized Solar Cell (DSSC) dalam konfigurasi tabung telah berhasil dibuat. DSSC dirakit menggunakan Inner Wall Conductive Glass Tube (IWCGT) yang mengandung SnO2-F (Fluorine Tin Oxide) sebagai lapisan konduktif. IWCGT dipreparasi menggunakan tehnik penguapan dan spray nebulizer, menghasilkan kaca transparan berpenghantar yang memiliki hambatan jenis antara 11-80 Ω/cm2. Sol TiO2 dilapiskan pada IWCGT dengan tehnik dip coating, dilanjutkan dengan kalsinasi pada suhu 500° C dan 550° C. Terhadap TiO2 hasil sintesis dilakukan karakterisasi menggunakan UV-Vis Diffuse Reflectance Spectrometry (DRS), Xray Diffraction (XRD), Fourier Transform Infra Red (FTIR) dan spektrofotometer Raman. Lapisan tipis yang diimobilisasi pada IWCGT dikarakterisasi menggunakan Field Emission Scanning Electron Microscope (FE-SEM) dan sistem elektrokimia. Berdasar spektrum UV-Vis dapat diketahui TiO2 yang dihasilkan memiliki energi celah (band gap) sebesar 3,01 dan 3,04 eV. Hasil pengukuran spektroskopi Raman dan XRD menunjukkan bahwa film yang dihasilkan didominasi oleh TiO2 dalam bentuk anatase dan mempunyai ukuran kristal sebesar 9,79 nm (kalsinasi pada suhu 500° C) dan 10,59 nm (kalsinasi pada suhu 550° C). Hasil FE-SEM menunjukkan bahwa lapisan TiO2 yang dipreparasi dengan bantuan template PEG memiliki ketebalan sebesar 496,56 nm. Sistem DSSC dalam konfigurasi tabung yang disiapkan dengan menggunakan TiO2 dan zat warna Rhodamin B, Klorofil dan campuran keduanya mampu menghasilkan efisiensi (η) antara 0,03 – 0,91%.;Dye Sensitized Solar Cell (DSSC) dalam konfigurasi tabung telah berhasil dibuat. DSSC dirakit menggunakan Inner Wall Conductive Glass Tube (IWCGT) yang mengandung SnO2-F (Fluorine Tin Oxide) sebagai lapisan konduktif. IWCGT dipreparasi menggunakan tehnik penguapan dan spray nebulizer, menghasilkan kaca transparan berpenghantar yang memiliki hambatan jenis antara 11-80 Ω/cm2. Sol TiO2 dilapiskan pada IWCGT dengan tehnik dip coating, dilanjutkan dengan kalsinasi pada suhu 500° C dan 550° C. Terhadap TiO2 hasil sintesis dilakukan karakterisasi menggunakan UV-Vis Diffuse Reflectance Spectrometry (DRS), Xray Diffraction (XRD), Fourier Transform Infra Red (FTIR) dan spektrofotometer Raman. Lapisan tipis yang diimobilisasi pada IWCGT dikarakterisasi menggunakan Field Emission Scanning Electron Microscope (FE-SEM) dan sistem elektrokimia. Berdasar spektrum UV-Vis dapat diketahui TiO2 yang dihasilkan memiliki energi celah (band gap) sebesar 3,01 dan 3,04 eV. Hasil pengukuran spektroskopi Raman dan XRD menunjukkan bahwa film yang dihasilkan didominasi oleh TiO2 dalam bentuk anatase dan mempunyai ukuran kristal sebesar 9,79 nm (kalsinasi pada suhu 500° C) dan 10,59 nm (kalsinasi pada suhu 550° C). Hasil FE-SEM menunjukkan bahwa lapisan TiO2 yang dipreparasi dengan bantuan template PEG memiliki ketebalan sebesar 496,56 nm. Sistem DSSC dalam konfigurasi tabung yang disiapkan dengan menggunakan TiO2 dan zat warna Rhodamin B, Klorofil dan campuran keduanya mampu menghasilkan efisiensi (η) antara 0,03 – 0,91%. ......A dye sensitized solar cell (DSSC) having tube geometry has been successfully constructed. The DSSC employ an Inner Wall Conductive Glass Tube (IWCGT) containing SnO2-F (Fluorine Tin Oxide) as conductive layer, which was prepared by evaporation and spray nebulizer method. The IWGCT has a transparent conductive oxide with high optical transmittance and low sheet resistance, that is 11-80 Ω/cm2. TiO2 film, immobilized on the IWCGT, was successfully prepared by a dip-coating technique from titania sol-gel, followed by heat treatment at 500° C and 550° C. The TiO2 was characterized by diffuse reflectance UV-Vis spectroscopy and XRD, photoelectrochemical system (PES) and field emission scanning electron microscopy (FE-SEM). Characterization results indicated that the prepared TiO2 has band gap of 3,01 and 3,04 eV (DRS UV-Vis); predominantly by anatase phase (XRD and Raman); having crystallite size of 9.79 nm (at 500° C calcinations) and 10.59 nm (at 550° C calcinations), and having 496,56 nm film thickness. By employing rhodamine B, chlorophyll and its mixture, as the dyes, the tubular DSSC reached efficiency (η) in the range of 0.03 to 0.91 %.;A dye sensitized solar cell (DSSC) having tube geometry has been successfully constructed. The DSSC employ an Inner Wall Conductive Glass Tube (IWCGT) containing SnO2-F (Fluorine Tin Oxide) as conductive layer, which was prepared by evaporation and spray nebulizer method. The IWGCT has a transparent conductive oxide with high optical transmittance and low sheet resistance, that is 11-80 Ω/cm2. TiO2 film, immobilized on the IWCGT, was successfully prepared by a dip-coating technique from titania sol-gel, followed by heat treatment at 500° C and 550° C. The TiO2 was characterized by diffuse reflectance UV-Vis spectroscopy and XRD, photoelectrochemical system (PES) and field emission scanning electron microscopy (FE-SEM). Characterization results indicated that the prepared TiO2 has band gap of 3,01 and 3,04 eV (DRS UV-Vis); predominantly by anatase phase (XRD and Raman); having crystallite size of 9.79 nm (at 500° C calcinations) and 10.59 nm (at 550° C calcinations), and having 496,56 nm film thickness. By employing rhodamine B, chlorophyll and its mixture, as the dyes, the tubular DSSC reached efficiency (η) in the range of 0.03 to 0.91 %.;A dye sensitized solar cell (DSSC) having tube geometry has been successfully constructed. The DSSC employ an Inner Wall Conductive Glass Tube (IWCGT) containing SnO2-F (Fluorine Tin Oxide) as conductive layer, which was prepared by evaporation and spray nebulizer method. The IWGCT has a transparent conductive oxide with high optical transmittance and low sheet resistance, that is 11-80 Ω/cm2. TiO2 film, immobilized on the IWCGT, was successfully prepared by a dip-coating technique from titania sol-gel, followed by heat treatment at 500° C and 550° C. The TiO2 was characterized by diffuse reflectance UV-Vis spectroscopy and XRD, photoelectrochemical system (PES) and field emission scanning electron microscopy (FE-SEM). Characterization results indicated that the prepared TiO2 has band gap of 3,01 and 3,04 eV (DRS UV-Vis); predominantly by anatase phase (XRD and Raman); having crystallite size of 9.79 nm (at 500° C calcinations) and 10.59 nm (at 550° C calcinations), and having 496,56 nm film thickness. By employing rhodamine B, chlorophyll and its mixture, as the dyes, the tubular DSSC reached efficiency (η) in the range of 0.03 to 0.91 %., A dye sensitized solar cell (DSSC) having tube geometry has been successfully constructed. The DSSC employ an Inner Wall Conductive Glass Tube (IWCGT) containing SnO2-F (Fluorine Tin Oxide) as conductive layer, which was prepared by evaporation and spray nebulizer method. The IWGCT has a transparent conductive oxide with high optical transmittance and low sheet resistance, that is 11-80 Ω/cm2. TiO2 film, immobilized on the IWCGT, was successfully prepared by a dip-coating technique from titania sol-gel, followed by heat treatment at 500° C and 550° C. The TiO2 was characterized by diffuse reflectance UV-Vis spectroscopy and XRD, photoelectrochemical system (PES) and field emission scanning electron microscopy (FE-SEM). Characterization results indicated that the prepared TiO2 has band gap of 3,01 and 3,04 eV (DRS UV-Vis); predominantly by anatase phase (XRD and Raman); having crystallite size of 9.79 nm (at 500° C calcinations) and 10.59 nm (at 550° C calcinations), and having 496,56 nm film thickness. By employing rhodamine B, chlorophyll and its mixture, as the dyes, the tubular DSSC reached efficiency (η) in the range of 0.03 to 0.91 %.]

Abstrak :
Studi morfologi dan ukuran nanopartikel Cu₂O menjadi topik menarik untuk diteliti karena memiliki pengaruh terhadap fungsi dan aplikasinya. Nanopartikel Cu₂O berhasil disintesis dengan variasi konsentrasi saponin (100 ppm, 500 ppm dan 1000 ppm), menggunakan NaOH sebagai sumber basa dan NH₂OH.HCl sebagai agen pereduksi. Penelitian ini bertujuan untuk melihat pengaruh biosrufaktan saponin ekstrak daun kembang sepatu (Hisbiscus rosa sinensis L) terhadap morfologi dan ukuran nanopartikel Cu₂O. Sintesis nanopartikel Cu₂O juga dilakukan tanpa penambahan esktrak saponin ditujukan sebagai pembanding. Hasil sintesis diarakterisasi menggunakan instrumentasi spektofotometer UV-Vis, XRD dan TEM. Hasil karakterisasi TEM menunjukkan bahwa nanopartikel Cu₂O yang diperoleh memiliki morfologi seperti kubus, truncated octahedral serta truncated cubic dengan ukuran sekitar 121, 5 ± 27,9 nm hingga 455,9 ± 67,7 nm.

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Morphological studies and sizes of Cu₂O nanoparticles are interesting topics to be investigated because they influence their function and application. Cu₂O nanoparticles were successfully synthesized with variations in the concentration of saponins (100 ppm, 500 ppm and 1000 ppm), using NaOH as a base source and NH2OH.HCl as a reducing agent. f this study aimed to examine the effect of saponin biosrufactant of hibiscus leaf extract (Hisbiscus rosa sinensis L) on the morphology and size of Cu₂O nanoparticles. Synthesis of Cu₂O nanoparticles was also carried out without the addition of saponin extracts intended as a comparison. The synthesis results were characterized using UV-Vis, XRD and TEM spectrophotometer instrumentation. TEM characterization results show that Cu₂O nanoparticles obtained have morphology such as cubes, truncated octahedral and truncated cubic with sizes ranging from 121, 5 ± 27,9 nm to 455,9 ± 67,7 nm.