Zn Electrodeposition of Titanium Dioxide for the Application of Dye Sensitized Solar Cell (DSSC) with Extracts of Natural Dyes That Were Co-pigmented with Salicylic Acid

Abstract

Dye Sensitizer Solar Cell (DSSC) is a dye-based solar cell which is an alternative to meet energy needs, where these cells will convert sunlight energy into electrical energy. This study aims to produce DSSC using Indium Tin Oxide (ITO) glass as a substrate and extract of red grape skin (Vitis Vinifera), jengkol skin extract (Pithecellobium jiringa), resident fruit (Melastoma malabathricum L), and mangosteen peel (Garcinia Mangostana) L) as a dye sensitizer. The semiconductor material used is Titanium dioxide (TiO2), because titanium dioxide has a wide band gap, is inert, harmless and also has a wide surface. The research began with the preparation of ITO glass which was carried out by a doctor blade method coated with TiO2 paste, after being coated the glass was heated on a hot plate at 100⁰ C for 30 minutes, and electrodeposition of Zn metal, after that the ITO glass was heated to the furnace and dropped by dyes. In other ITO glass the conductive part is coated with carbon from heating on a candle, after which solar cells are tested by assembling the glass like a sandwich, and dropped by an electrolyte solution. The dye used is characterized by using UV-Vis and FTIR. The results of XRD analysis showed that there was a decrease in the size of TiO2 crystals and that ZnSO4 was still present in TiO2. The decrease in crystal size will cause an increase in the surface area of TiO2 thereby increasing DSSC efficiency. The efficiency of DSSC that uses Zn electrodeposition on TiO2 (Zn-TiO2) has increased compared to DSSC using pure TiO2, from 0.8% to 4.14% at 1 V electrodeposition voltage. This increase occurs because a barrier layer of the process of recombination of electrons with electrolytes and an increase in the surface area of TiO2. The optimum voltage and time of electrodeposition of Zn on TiO2 are 1V and 15 seconds with the resulting DSSC efficiency of 6.00%. DSSC performance produced with TiO2-Zn layer and co-pigmented pigments were 1.8062% jengkol peel, 4.40% resident fruit, 3.8039% mangosteen peel, and 4.812% grape skin. The highest efficiency was obtained on DSSC by Zn electrodeposition in TiO2 layer using grape skin as a source of dyes.

Pengaruh KOH Sebagai Inisiator Pada Polimerisasi Tanin Terhadap Efisiensi Sel Surya DSSC

“…Agar proses pembersihan kaca lebih optimal maka kaca ITO terlebih dahulu dimasukkan kedalam ultrasonic cleaner selama 60 menit. Setelah itu kaca ITO dikeringkan dan diukur resistensinya menggunakan multimeter digital [13].…”

“…Efisiensi sel surya dapat dihitung menggunkan rumus Ƞ = x 100%. Dimana Pmax ialah daya dari sumber yang dihasilkan oleh DSSC, Pin merupakan saya sumber cahaya yang digunakan pada DSSC [13].…”

Pengaruh Agen Pengikat Silang dan Waktu Polimerisasi Poli Asam Tanat pada Efisiensi Dye Sensitized Solar Cell (DSSC)

“…Hal ini menandakan telah terjadinya polimerisasi pada asam tanat karena mengalami efek batokromik. Efek batokromik adalah pergeseran ke tingkat energi yang lebih rendah dengan naiknya nilai panjang gelombang maksimum (λ maks ) pergeseran ini juga disebut dengan pergeseran merah [14].…”