Graphene and Carbon Quantum Dot-Based Materials in Photovoltaic Devices: From Synthesis to Applications

Abstract

Graphene and carbon quantum dots have extraordinary optical and electrical features because of their quantum confinement properties. This makes them attractive materials for applications in photovoltaic devices (PV). Their versatility has led to their being used as light harvesting materials or selective contacts, either for holes or electrons, in silicon quantum dot, polymer or dye-sensitized solar cells. In this review, we summarize the most common uses of both types of semiconducting materials and highlight the significant advances made in recent years due to the influence that synthetic materials have on final performance.

A Novel Route to High-Quality Graphene Quantum Dots by Hydrogen-Assisted Pyrolysis of Silicon Carbide

“…Graphene quantum dots (GQDs), composed of few graphene layers with a size less than 30 nm, have attracted research interest due to their unique properties, such as possessing a large surface area, low toxicity and strong and tunable photoluminescence [1][2][3][4]. With these advantageous characteristics, GQDs can be used for bioimaging [5,6], biosensing [7], photovoltaics [8,9], drug delivery [10,11] and optoelectronic devices [12,13]. Both top-down and bottom-up approaches have been developed to synthesize GQDs.…”

Analisis Fotoluminesensi Karbon Dot Dari Daun Teh Dan Daun Pepaya Dengan Teknik Microwave

“…Secara umum aplikasi karbon dot dapat dibagi dua, yaitu aplikasi dalam ilmu bahan (materials science) dan aplikasi berorientasi biologis. Dalam bidang ilmu bahan, karbon dot berguna sebagai sensor kimiawi, sel surya, dan berbagai aplikasi lain dalam bidang optoelektronika dan fotonika [5,6]. Dalam aplikasi biologis, karbon dot berguna dalam hal bioimaging dan biosensor, serta berpotensi sebagai agen terapeutik untuk beberapa penyakit [2].…”

Facile reflux synthesis of polyethyleneimine‐capped fluorescent carbon dots for sequential bioassays toward Cu2+/H2S and its application for a logic system

“…The former depends on larger carbon structure to decomposition, which involves arc discharge, laser ablation, and electrochemical oxidation, and the later usually comes from small molecules that contain combustion/thermal treatments and microwave‐assisted routes . Although all methods above have been remarked as classical assays, they still have drawbacks in wasting too much time, relying on necessary thermal and pressure, utilizing concentrated acid in pretreatment, or costing steps in post‐purification . Therefore, to overcome these defects, a simple and cost‐effective method is promising to lift CDs up as an easy‐to‐access material.…”