Bulk hetero junction 고분자 태양전지의 동향

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"Bulk hetero junction 고분자 태양전지의 동향"에 대한 내용입니다.

목차

1. Introduction
2. New Materials and Design Rules for Efficient Light Harvesting
- Donor Polymers Developed at Early Stage
3. Recent Advances in Polymer Designs
-1. Effect of Polymer Backbone
-2. Influence of Side Chains
-3. Influence of the Substituents
-4. Other Effects to Be Considered

본문내용

Introduction
< Inorganic Solar Cells>

Solar energy

Inorganic materials: Crystalline Silicon, Copper Indium Germanium Selenide (CIGS), so on…

- High solar energy conversion efficiency
- Dominate photovoltaic (PV) technologies.

- High cost
- Environmental issues

< Thin Film Polymer Solar Cells (PSCs)>

- Low cost
- High throughput roll-to-roll production process
- Lightweight and flexible

< PCE(power conversion efficiency) of a solar cell>

- Open-circuit voltage (Voc)
- Short-circuit current density (Jsc)
- Fill factor (FF)

Divided by input power.

< Working Mechanism of Bulk Heterojunction (BHJ) PSC >

1. Light absorption and generation
- Highly localized, tightly bound Frenkel excitons.

2. Exciton diffusion to the donor- acceptor interface

3. Exciton dissociation at the interface
- First, creating charge transfer (CT) states or polaron pairs.
- Then, CT states dissociate into free charge carriers.

4. Charge transport and collection

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