Emerging Strategies to Reduce Transmission and Thermalization Losses in Solar Cells: Redefining the

1 Introduction: Solar cell e!ciency and routes beyond current limits
By Jonas Sandby Lissau and Morten Madsen
References

Part I: Addressing transmission losses - sequential absorption via triplet fusion in organic materials

2 Photophysics
By Nancy Awwad, Mo Yang, and Felix N. Castellano

3 Near-infrared-to-visible photon upconversion
By Nobuhiro Yanai

4 Photon upconversion based on sensitized triplet-triplet annihilation
(sTTA) in solids
By Angelo Monguzzi

5 Organic triplet photosensitizers for triplet-triplet annihilation
upconversion
By Zafar Mahmood, Shaomin Ji, Jianzhang Zhao, Mushraf Hussain, Farhan
Sadiq, Noreen Rehmat, and Muhammad Imran

6 Plasmon-enhanced homogeneous and heterogeneous triplet-triplet
annihilation
By Emily Westbrook, Xian Cao, and Peng Zhang

Part II: Molecular oxygen and triplets - photophysics and protective strategies

7 Molecular Oxygen in Photoresponsive Organic Materials
By Mikkel Bregnhøj and Peter R. Ogilby
8 Protective Strategies towards Long-term Operation of Annihilation
Photon Energy Upconversion
By Stanislav Baluschev

9 Additive-assisted stabilization against photooxidation of organic
and hybrid solar cells
By Michela Prete, Um Kanta Aryal, Jonas Sandby Lissau, Morten Madsen,
Vida Turkovic

Part III: Implementation of photochemical upconversion in solar cells

10 Optically-coupled Upconversion Solar Cells
By Laszlo Frazer and Timothy W. Schmidt

11 Electronically-coupled TTA-UC Solar Cells
By Yan Zhou and Kenneth Hanson

Part IV: Addressing transmission losses - sequential absorption in rare earth ions

12 Rare-earth ion based photon up-conversion for transmission-loss
reduction in solar cells
By Hai-Qiao Wang, Andres Osvet, Miroslaw Batentschuk, and Christoph J.
Brabec

13 Nanophotonics for photon upconversion enhancement
By Wounjhang Park, Ananda Das, and Kyuyoung Bae

Part V Addressing thermalisation losses - singlet fission and quantum cutting

14 Singlet fission - mechanisms and molecular design
By Victor Gray, Leah Weiss, and Akshay Rao

15 Singlet fission solar cells
By Bruno Ehrler