Search results for: William R. Mateker

Items from 1 to 4 out of 4 results

article

Progress in Understanding Degradation Mechanisms and Improving Stability in Organic Photovoltaics

William R. Mateker, Michael D. McGehee

Advanced Materials > 29 > 10 > n/a - n/a

Understanding the degradation mechanisms of organic photovoltaics is particularly important, as they tend to degrade faster than their inorganic counterparts, such as silicon and cadmium telluride. An overview is provided here of the main degradation mechanisms that researchers have identified so far that cause extrinsic degradation from oxygen and water, intrinsic degradation in the dark, and photo‐induced...

article

Assessing the stability of high performance solution processed small molecule solar cells

Rongrong Cheacharoen, William R. Mateker, Qian Zhang, Bin Kan, more

Solar Energy Materials and Solar Cells > 2017 > 161 > C > 368-376

Solution-processed small molecule-fullerene bulk heterojunction (SM BHJ) solar cells now have power conversion efficiency (PCE) greater than 10%. However, degradation of SM BHJ solar cells has not been well studied. This work reports the first stability study of six high performance molecules including the record SM BHJ solar cells under device operating conditions. Solar cells with a range of donor...

article

Electron Barrier Formation at the Organic‐Back Contact Interface is the First Step in Thermal Degradation of Polymer Solar Cells

I. T. Sachs‐Quintana, Thomas Heumüller, William R. Mateker, Darian E. Orozco, more

Advanced Functional Materials > 24 > 25 > 3978 - 3985

Long‐term stability of polymer solar cells is determined by many factors, one of which is thermal stability. Although many thermal stability studies occur far beyond the operating temperature of a solar cell which is almost always less than 65 °C, thermal degradation is studied at temperatures that the solar cell would encounter in real‐world operating conditions. At these temperatures, movement of...

article

The Mechanism of Burn‐in Loss in a High Efficiency Polymer Solar Cell

Craig H. Peters, I. T. Sachs‐Quintana, William R. Mateker, Thomas Heumueller, more

Advanced Materials > 24 > 5 > 663 - 668

Degradation in a high efficiency polymer solar cell is caused by the formation of states in the bandgap. These states increase the energetic disorder in the system. The power conversion efficiency loss does not occur when current is run through the device in the dark but occurs when the active layer is photo‐excited.

INFONA - science communication portal

Search results for: William R. Mateker

Progress in Understanding Degradation Mechanisms and Improving Stability in Organic Photovoltaics

Assessing the stability of high performance solution processed small molecule solar cells

Electron Barrier Formation at the Organic‐Back Contact Interface is the First Step in Thermal Degradation of Polymer Solar Cells

The Mechanism of Burn‐in Loss in a High Efficiency Polymer Solar Cell

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INFONA - science communication portal

Search results for: William R. Mateker

Progress in Understanding Degradation Mechanisms and Improving Stability in Organic Photovoltaics

Assessing the stability of high performance solution processed small molecule solar cells

Electron Barrier Formation at the Organic‐Back Contact Interface is the First Step in Thermal Degradation of Polymer Solar Cells

The Mechanism of Burn‐in Loss in a High Efficiency Polymer Solar Cell

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