The present invention generally relates to organic photosensitive optoelectronic devices. More specifically, it is directed to organic photovoltaic devices, e.g., organic solar cells. Further, it is directed to an optimized organic solar cell comprising multiple stacked subcells in series. High powe
The present invention generally relates to organic photosensitive optoelectronic devices. More specifically, it is directed to organic photovoltaic devices, e.g., organic solar cells. Further, it is directed to an optimized organic solar cell comprising multiple stacked subcells in series. High power conversion efficiency are achieved by fabrication of a photovoltaic cell comprising multiple stacked subcells with thickness optimization and employing an electron blocking layer.
대표청구항▼
1. An organic photosensitive optoelectronic device comprising: an anode; multiple subcells in series, each subcell comprising: an electron donor layer, and an electron acceptor layer in contact with the electron donor layer, an electron-hole recombination zone separating the subcells, and
1. An organic photosensitive optoelectronic device comprising: an anode; multiple subcells in series, each subcell comprising: an electron donor layer, and an electron acceptor layer in contact with the electron donor layer, an electron-hole recombination zone separating the subcells, and a cathode, wherein the current generated by each subcell is about equal. 2. The device of claim 1, wherein an exciton blocking layer is situated between the electron acceptor layer and the cathode. 3. The device of claim 2, wherein the exciton blocking layer comprises BCP. 4. The device of claim 2, wherein the exciton blocking layer comprises Alq2OPH. 5. The device of claim 1, wherein the an anode smoothing layer is situated between the electron donor layer and the anode. 6. The device of claim 1, wherein the anode smoothing layer comprises PEDOT. 7. The device of claim 1, wherein the electron donor layer comprises a pthalocyanine or a porphyrin, and the electron acceptor layer comprises a perylene, naphthalene, fullerene or nanotubule. 8. The device of claim 1, wherein the anode is selected from transparent conducting oxides. 9. The device of claim 8, wherein the anode is selected from ITO. 10. The device of claim 1, wherein the electron-hole recombination zone is a semitransparent metal layer. 11. The device of claim 1, wherein the electron-hole recombination zone is selected from a layer of Ag, Li, LiF, Al, Ti, and Sn. 12. The device of claim 11, wherein the electron-hole recombination zone a layer of Ag. 13. The device of claim 1, wherein the electron-hole recombination zone is less than about 20 .ANG. in thickness. 14. The device of claim 10, wherein the metal layer is composed of nanoparticles. 15. The device of claim 1, wherein the electron-hole recombination zone comprises a region of electronically active defects. 16. The device of claim 2, wherein: the electron transport layer is PTCBI the hole transport layer is CuPc; the electron-hole recombination zone is Ag, and the exciton blocking layer is BCP. 17. The device of claim 1, wherein the external power conversion efficiency is at least 1% at one sun illumination. 18. The device of claim 1, wherein the device is capable of a power conversion efficiency of about 2.5% at a light intensity of about 0.5 sun.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (15)
Forrest Stephen R. ; Bulovic Vladimir ; Peumans Peter, Highly efficient multiple reflection photosensitive optoelectronic device with optical concentrator.
Antoniadis Homer ; Curtis Hoyle ; Moon Ronald L. ; Roitman Daniel B. ; Sheats James R., Method and apparatus for fabricating polymer-based electroluminescent displays.
Tommie W. Kelley ; Dawn V. Muyres ; Mark J. Pellerite ; Timothy D. Dunbar ; Larry D. Boardman ; Terrance P. Smith, Surface modifying layers for organic thin film transistors.
Forrest Stephen R. (Princeton NJ) Thompson Mark E. (Anaheim Hills CA) Burrows Paul E. (Princeton NJ) Bulovic Vladimir (Metuchen NJ) Gu Gong (Princeton NJ), Transparent contacts for organic devices.
Hou, Jianhui; Zhang, Shaoqing, Conjugated polymers with carbonyl substituted thieno[3,4-B]thiophene units for polymer solar cell active layer materials.
Hou, Jianhui; Zhang, Shaoqing, Conjugated polymers with carbonyl-substituted thieno [3,4-B] thiophene units for polymer solar cell active layer materials.
Hayashi,Kazuhiko; Funuchi,Takashi; Tsuboi,Shinzo; Fujieda,Ichiro, Organic electroluminescent element and organic electroluminescent device including the same.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.