Effects of Organic Passivation Films on Properties of Polymer Solar Cells with P3HT:PC<sub>61</sub>BM Active Layers

The organic light emitting diodes (OLEDs) have been studied as large flexible displays, light source and hard wares of internet of things. However, OLEDs show some drawbacks in terms of external environments due to the low work function of the metals and the reactive organic materials. In particular, the operation functions of the OLEDs tend to deteriorate rapidly by exposing the oxygen and moisture. So as to prevent it, domestic and overseas studies underway in various method such as ALD, PVD, CVD. But it has complex process and high cost. Therefore In order to protect devices from the external environments, it is important to develop the passivation thin films of low-cost and simple process which can prevent the devices from the penetration of the oxygen and moistures. In this study, to improve the reliability, passivation thin films were coated onto the green OLEDs by spin coating method and investigated the changes of the optical properties of the prepared devices at various doping concentrations of sodium alginate (SA). The passivation solutions were synthesized by using polyvinyl alcohol (PVA) host material with a dopant of SA which were added with the amounts of 10, 20 and 40 wt% into the PVA. As a result, the best barrier properties of the OLEDs were obtained for the samples with 40 wt% SA. Finally, the passivation films can be optimized by using the mixture solution of PVA and SA materials.

show abstract

Effects of Passivation Thin Films by Spray Coatings on Properties of Flexible CIGS Solar Cells

Lee¹,

Park²,

Kim³

et al. 2016

Journal of the Microelectronics and Packaging Society

View full text Add to dashboard Cite

In order to protect the solar cells from the moisture and oxygen, we evaluated the electrical and optical properties for the Cu(In,Ga)Se 2 (CIGS) solar cells which were prepared by the spray coating method. Generally, the EVA (ethylene-vinyl acetate) films are laminated to protect the CIGS flexible solar cells, which results in a high cost process due to complicated devices. In this study, we tried to prepare the protection layers of the flexible CIGS flexible solar cells by using spray coating method instead of conventional laminating films in order to reduce the device weight as well as the process time. The CIGS solar cells with spray coating method showed an enhanced efficiency than the before treated sample (2.77% to 2.93%) and relatively proper water vapor transmission rate of the solar cells about 62.891 gm/[m 2 -day].

show abstract

Effects of Organic Passivation Films on Properties of Polymer Solar Cells with P3HT:PC₆₁BM Active Layers

Cited by 3 publications

References 11 publications

Preparation and properties of passivation film layers spray coated flexible Cu(In, Ga)Se<inf>2</inf> solar cells

Preparation and properties of passivation film layers spray coated flexible Cu(In, Ga)Se<inf>2</inf> solar cells

Effects of Passivation Thin Films on the Optical Properties of the Green Organic Light Emitting Diodes

Effects of Passivation Thin Films by Spray Coatings on Properties of Flexible CIGS Solar Cells

Contact Info

Product

Resources

About

Effects of Organic Passivation Films on Properties of Polymer Solar Cells with P3HT:PC61BM Active Layers

Cited by 3 publications

References 11 publications

Preparation and properties of passivation film layers spray coated flexible Cu(In, Ga)Se<inf>2</inf> solar cells

Preparation and properties of passivation film layers spray coated flexible Cu(In, Ga)Se<inf>2</inf> solar cells

Effects of Passivation Thin Films on the Optical Properties of the Green Organic Light Emitting Diodes

Effects of Passivation Thin Films by Spray Coatings on Properties of Flexible CIGS Solar Cells

Contact Info

Product

Resources

About

Effects of Organic Passivation Films on Properties of Polymer Solar Cells with P3HT:PC₆₁BM Active Layers