Judul: Analisis Pengetahuan dan Loyalitas Konsumen pada Pengguna Paylater di  Jabodetabek
Abstrak: Paylater memungkinkan konsumen dapat melakukan pinjaman secara online dan transaksi pembelian barang atau jasa dengan pembayaran yang dapat dicicil atau dibayarkan nanti. Syarat pendaftaran paylater yang mudah dan tuntutan gaya hidup, menjadikan paylater banyak digunakan oleh berbagai kalangan konsumen di masyarakat terutama di kota-kota besar seperti Jabodetabek. Penelitian bertujuan untuk menganalisis pengaruh karakteristik demografi, sosial, dan ekonomi terhadap pengetahuan dan loyalitas konsumen pada pengguna paylater di Jabodetabek. Penelitian ini menggunakan teknik non probability sampling dan pengambilan contoh dengan convinience sampling yang melibatkan 278 responden. Penelitian menunjukkan pengetahuan konsumen memiliki nilai yang hampir merata. Kemudian pada loyalitas konsumen kategori rendah dan sedang memiliki nilai yang hampir sama. Berdasarkan hasil ditemukan bahwa karakteristik demografi yaitu jenis kelamin laki-laki mempunyai loyalitas yang lebih tinggi terhadap penggunaan paylater. Pada karakteristik sosial dan ekonomi ditemukan bahwa pendidikan dan pendapatan berpengaruh positif signifikan terhadap pengetahuan dan loyalitas konsumen. Pengetahuan konsumen memiliki pengaruh positif signifikan terhadap loyalitas konsumen pengguna paylater.
Keyword: consumer knowledge, consumer loyalty, paylater, socioeconomic  demographic characteristics

Judul: Analysis of Need Recognition and Usage Behavior of Paylater in Jabodetabek
Abstrak: Paylater marak digunakan oleh masyarakat Indonesia, utamanya pada masyarakat di kawasan Jabodetabek. Banyaknya penggunaan paylater oleh masyarakat disebabkan karena adanya kemudahan dan manfaat yang ditawarkan kepada konsumen. Selain itu, pesatnya perkembangan teknologi dan tingginya biaya hidup di kawasan Jabodetabek juga seringkali membuat konsumen untuk melakukan transaksi menggunakan paylater. Tujuan dilakukan nya penelitian ini adalah untuk mengetahui pengaruh karakteristik demografi (usia, jenis kelamin, dan status perkawinan), sosial (tingkat pendidikan dan pekerjaan), dan ekonomi (pendapatan) terhadap pengenalan kebutuhan dan perilaku penggunaan paylater di Jabodetabek. Penelitian ini menggunakan metode kuantitatif dan desain penelitian cross-sectional study. Penarikan contoh pada penelitian ini menggunakan teknik non-probability sampling yaitu convenience sampling. Analisis data meliputi analisis deskriptif, uji korelasi, serta uji pengaruh yang dilakukan menggunakan Microsoft Excel 2021, IBM SPSS 26, dan SmartPLS. Jumlah contoh yang dianalisis pada penelitian ini berjumlah 278 responden yang pernah ataupun sedang menggunakan paylater sebagai metode pembayaran, berusia lebih dari 17 tahun, dan berdomisili di Jabodetabek. Kawasan Jabodetabek dipilih sebagai lokasi penelitian karena merupakan pusat kawasan ekonomi di Indonesia dan pusat perkembangan teknologi di Indonesia, sehingga masyarakat di Jabodetabek juga memiliki sikap yang baik dalam menerima perkembangan teknologi. Hasil penelitian menunjukkan bahwa jenis kelamin memiliki pengaruh terhadap pengenalan kebutuhan. Juga terdapat pengaruh antara tingkat pendidikan, pendapatan, dan pengenalan kebutuhan terhadap perilaku penggunaan paylater., Paylater is widely used by the Indonesian society, especially among the people in Jabodetabek area. The prevalence of paylater usage among the people is attributed by the convenience and benefits it offers to consumers. Additionally, the rapid advancement of technology and the high cost of living in the Jabodetabek area often prompt consumers to conduct transactions using paylater. The purpose of this research is to determine the influence of demographic characteristics (age, gender, and marital status), social factors (education level and occupation), and economic factors (income) on the need recognition and the usage behavior of paylater in Jabodetabek. This research utilizes a quantitative method, employing a cross-sectional study design. The sampling technique employed in this study is non-probability convenience sampling. Data analysis includes descriptive analysis, correlation tests, and effect tests conducted using Microsoft Excel 2021, IBM SPSS 26, and SmartPLS. The total number of respondents analyzed in this research is 278 individuals who have used or are currently using paylater as a payment method, are aged over 17 years old, and reside in Jabodetabek. The Jabodetabek area was chosen as the research location because it is the economic center of Indonesia and a hub for technological development, leading the people in Jabodetabek to have a positive attitude towards technological advancements. The research findings indicate an influence of gender on the need recognition. There is also an influence of education level, income, and need recognition on the usage behavior of paylater.
Keyword: paylater, Consumer characteristics, need recognition, Usage behavior, Financial Technology

Judul: Hybrid solar cells of ZnO nanoparticles/chlorophyll was modified metal ions (Zn2+ and Cu2+ )
Abstrak: Zinc Oxide (ZnO) is a n-type semiconductor with a wide the energy band (Band Gap) is 3.37 eV at room temperature and 3.34 eV at low temperature with a large exiton binding energy is 60 meV. ZnO has been synthesized by hydrothermal method, resulting in a decrease in particle size over the duration of the hydrothermal changes. Crystallographic structure of ZnO were characterized using XRD, has shown the characteristic pattern of a hexagonal wurtzite structure, the crystallite size increases to changes in particle size. Changes in particle size has also led to a change in the absorption peak of ZnO as has been demonstrated posted under test using the optical properties of UV-Vis spectrophotometer. Changes of this uptake has also led to changes in the energy band gap, which increases its band gap energy of the particle size. In electronic applications, especially in solar cells. Chlorophyll is considered less effective, because of their very nature are easily degraded as a result of several reactions which are acid, lighting and temperature. The results of the stability test using a halogen lamp 34 W/m2 for 5 hours, that the substitution of chlorophyll with metal ions Zn2+ and Cu2+ has been shown to form more stable than natural chlorophyll. The characterization of the optical properties, the combination of ZnO / chlorophyll in the form of hybrid films has led to a shift in the absorption region of ZnO becomes more widely from the UV to Visible. ZnO/chlorophyll has absorption range of 350-515 nm, ZnO / Zn-feofitin 332-401 nm and 332-632 nm for Cu-feofitin. The combination of ZnO/chlorophyll and CuSCN as a solid electrolite in hybrid solar cell, a modified chlorophyll with metal ions Zn2+ and Cu2+ has been shown to form a more stable I-V curve. It is characterized by its fill factor value greater than natural chlorophyll. Nevertheless, solar cells with natural chlorophyll has been able to produce higher efficiency values of chlorophyll were substituted.
Keyword: Hydrothermal, ZnO/Chlorophyll modified, Hybrid Solar Cell