Two-dimensional (2D) materials have attracted much attention due to their unique properties and great potential in various applications. Controllable synthesis of 2D materials with high quality and high efficiency is essential for their large scale device applications. Chemical vapor deposition (CVD) has been one of the most reliable technique for the synthesis of 2D materials. To explore novel applications and the discovery of new phenomena in these materials, it is necessary to develop a process to transfer high quality and large area 2D materials onto desirable substrates with great efficiency and high yield. The research team led by Prof. KANG demonstrate that adding a water soluble PVA layer inbetween the PMMA layer and 2D material grown on a rigid substrate allows not only the effective transfer to arbitrary target substrates with a high degree of freedom but also avoids the etching of the PMMA layer to obtain contaminationfree high quality 2D materials by avoiding detrimental effects related to surface contaminants. Graphene transferred by this process exhibits excellent quality, indicated by a charge neutrality point being close to zero. Due to the elimination of contamination from the PMMA residues, both graphene and MoS2 FETs fabricated using their transfer method showed higher mobility and current modulation values compared to those formed using conventional PMMA assisted transfer of the 2D materials. This facile transfer technique has great potential for future research towards the application of 2D materials in high performance optical, mechanical, and electronic devices.