**2. Introduction to graphene/semiconductor hybrids**

Graphene semiconductor hybrids as well as composites prove to be more fascinated substitute for manufacturing comparatively much lighter, compact as well as effective batteries. If for instance, the concern is to alleviate various issues directing from synthesis routes to the recreatability of a homogeneous component, then the ultimate consequence would be the commercialization of products. Agglomeration rate of graphene matters too. Electrochemical sensors along with biosensors have upgraded their work by these hybrids. These sensors consider to be the best regarding detection of bacteria, viruses etc. [17].

#### **2.1 Fabrication of graphene/semiconductor hybrids**

ZnO combination with graphene reveals its speciality for better as well as increased performances. Fabrication of graphene semiconductor hybrids can be done by number of ways, like solvothermal method, ultrasonic spray pyrolysis, microwaveassisted zinc ions reduction with graphene as shown in **Figure 2**.

All these techniques possess limited utility because of some issues being unaddressed. These includes cumbersome procedure, equipment's sophistication and economically low feasibility. However, need is to adopt a method having no such issues. Therefore, In situ thermally decomposed zinc dihydrazinate complex on graphene's surface at comparatively moderate temperature is the best choice. Prime leverages for *Graphene Based Functional Hybrids: Design and Technological Applications DOI: http://dx.doi.org/10.5772/intechopen.108791*

**Figure 2.** *General fabrication routes for graphene semiconductor hybrids (GSH).*

this new method are its simplistic behavior, uniformity in size of particles, high end product with no much residual impurities [18].
